Skeleton of RanaFrog skeleton
Discover great deals on the many hard to find and one of a kind items available only on ebay!

Frog

Frog is the common name for amphibians in the order, Anura. There is often a distinction made between frogs and toads, based on appearance, however there is no scientific distinction. The only family exclusively given the common name "toad" is Bufonidae, but many species from various other families are also called "toads". more...

HomeHome
AmphibianAmphibian
FrogFrog
SalamanderSalamander
ToadToad
ArthropodArthropod
BirdBird
CatCat
DinosaurDinosaur
DogDog
FishFish
MammalMammal
MythologicalMythological
ReptileReptile


"True frogs" are of the family Ranidae.

Characteristics

Due to the large diversity of frogs (over 4000 species), many characteristics are not shared throughout all of the species. However, there are some characteristics which distinguish them from other amphibians. Frogs are generally well suited to jumping, and have long hind legs, with elongated ankle bones. They have a short vertebral column, with no more than ten free vertebrae, followed by a fused tail bone, usually resulting in a frog with no tail.

Frogs range in size from 10mm (Psyllophryne didactyla of Brazil and Eleutherodactylus iberia of Cuba) to 300mm (Goliath frog, Conraua goliath, of Cameroon).

The skin is unkeratinized and hangs loosely on the body because of the lack of loose connective tissue, and can be smooth, warty or have skin folds. Frogs have three eyelid membranes: one transparent to protect the eyes underwater, and two which are translucent to opaque. They have a tympanum on each side of their head, which is involved in hearing, and is covered by skin in some species.

Call

The males of most species of frogs will call for a variety of reasons. It will call by passing air through the larynx, in the throat. In most calling frogs, the sound is amplified by the vocal sac(s). The vocal sac is a membrane of skin under the throat which distends during the amplification of the call. Each call is unique to a species.

The main reason for calling is for the male to attract a mate. Males will either call in a group, called a chorus, or individually. A male frog will emit a different call when mounted by another male. Both of these calls are emitted with the mouth of the frog closed.

A distress call is emitted by some frogs when they are in a position of danger. This is done with the mouth open, and usually results in a higher pitched call. The effectiveness of the call is unknown, however it is suspected the call intrigues the predator, until another animal is attracted, distracting them enough for its escape.

Many species of frog have deep calls, or croaks. Frog noise tends to be spelt (for English speakers) as "crrrrk" in Britain and "ribbit" in the USA. This difference is due to the different species within each region(e.g. Common frog (Rana temporaria) in Britain and Leopard frog (Rana pipiens) in the USA). The croak of the American bullfrog (Rana catesbiana) is sometimes spelt "jug o' rum".

Poison

Some species of frog secrete toxins from their skin. These toxins deter predatory animals from eating them, and some are extremely poisonous to humans. Generally the frog obtains the poison from the insects or animals they eat. The Australian corroboree frogs pseudophryne corroboree and pseudophryne pengilleyi have been discovered to be able to manufacture a unique alkaloid which is not derived from their diet (Daly). Some natives of the Amazon area extract poison from the poison dart frog and put it on their darts when hunting. It was previously a misconception that the poison was placed on arrows rather than darts. The name of the frog was changed from poison arrow frog to poison dart frog in the early 1980's. Poisonous frogs tend to advertise their toxicity with bright colours.

Distribution and status

Frogs are found nearly worldwide, but they do not occur in Antarctica and are not present on many oceanic islands.

In many parts of the world, the frog populations have declined drastically since the 1950s. Many environmental scientists feel that amphibians, and frogs in particular, may be excellent biological indicators of ecosystem function because of their location on the food web, their permeable skins and their typically bi-phasic life (in both water and on land). Although habitat loss is certainly one of the most important features of most declines; pollutants, climate change, introduction of non-indigenous predators/competitors, and infectious diseases (see Chytrid fungus) have also been implicated.

Life cycle

The life cycle of frogs contains many stages. Typically, the male frogs of a species will assemble at a still water source. They will then call, collectively becoming a chorus of frogs. The call is unique to the species, and will attract females of that species.

The male and female frog, will then undergo amplexus. This involves the male mounting the female. The female then releases her eggs, which the male frog covers with a sperm solution before the eggs make contact with the water. Once the eggs come in contact with the water, they will swell, and form a protective coating. The eggs are typically brown or black, with a clear, gelatine like, covering.

The eggs will hatch after a short time, releasing tadpoles. The tadpoles are entirely aquatic, and undergo the most develpoment in the life cycle. They will undergo metamorphisis, in which they will develop legs, and lungs, to become a froglet, resembling an adult but retaining a vestigial tail. Finally the froglet develops into an adult frog. Typically, tadpoles are herbivores, feeding mostly on algae, whereas juvenile and adult frogs are rather voracious carnivores.

Most temperate species of frog reproduce in the period between late autumn to early spring. In the UK most common frog populations produce frogspawn in February although there is wide variation in timing. Water temperatures at this time of year are relatively low and typically between four and 10 degrees celsius. Reproducing in these conditions helps the developing tadpoles because dissolved oxygen concentrations in the water are highest at cold temperatures. More importantly, reproducing early in the season ensures that appropriate food is available to the developing frogs at the right time.

Diet and Predators

All adult frogs are carnivores, and usually eat invertebrates such as: insects, worms and spiders. However, a few of the larger species may eat larger prey, such as small mammals, fish and smaller frogs. Some frogs use their sticky tongues effectively in catching fast-moving prey, while others capture their prey, and force it into their mouth with their hands.

Read more at Wikipedia.org


[List your site here Free!]

You Have To Kiss A Lot Of Frogs (Red Dress Ink NovYou Have To Kiss A Lot Of Frogs (Red Dress Ink Nov $3.99 Automatic Frog-Shape Bubble Machine Baby Kids Bath Shower Bathing Music Toy GiftAutomatic Frog-Shape Bubble Machine Baby Kids Bath Shower Bathing Music Toy Gift $14.69
New Battlefrog Medal Obstacle Race Series Battle Frog Finisher Award MedallionNew Battlefrog Medal Obstacle Race Series Battle Frog Finisher Award Medallion $7.50 Garden Flag Welcome To My Pad12.5 X 18 ( Vibrant Colors ) FrogGarden Flag Welcome To My Pad12.5 X 18 ( Vibrant Colors ) Frog $3.99
Bunny Rabbit Baby Ball Rich Frog Foozler Stuffed Plush Rattle Toy pink white NewBunny Rabbit Baby Ball Rich Frog Foozler Stuffed Plush Rattle Toy pink white New $9.99 Life at The Pond the rise and fall of Tony the Frog: (Dvd) "Brand New, Sealed"Life at The Pond the rise and fall of Tony the Frog: (Dvd) "Brand New, Sealed" $5.69
Disney Princess Spell Princess & The Frog Decorative Valance 50x17"Disney Princess Spell Princess & The Frog Decorative Valance 50x17" $13.58 Was:  Previous Price $16.98 New Tcu Horned Frogs Zephyr Brand Men's Duo Hat Cap Size XlNew Tcu Horned Frogs Zephyr Brand Men's Duo Hat Cap Size Xl $19.99
Lot of 2 Tonala Mexico Bird Frog miniatures Mexican Pottery Vintage Lot of 2 Tonala Mexico Bird Frog miniatures Mexican Pottery Vintage  $14.99 Moanin' Frogs (Cd Used Very Good)Moanin' Frogs (Cd Used Very Good) $17.30
Betsey Johnson Crystal Frog King Pendant Charm Necklace-NwtBetsey Johnson Crystal Frog King Pendant Charm Necklace-Nwt $3.99 Security Blanket Frog Crown Zig-Zag Stripe green plush S L Home Fashions BabySecurity Blanket Frog Crown Zig-Zag Stripe green plush S L Home Fashions Baby $19.99
Frog Basket Art Pottery Planter / BowlFrog Basket Art Pottery Planter / Bowl $74.99 Toddler Sz 24 Months Girls One Piece Frog Pucker Up Valentines Day Shirt NwtToddler Sz 24 Months Girls One Piece Frog Pucker Up Valentines Day Shirt Nwt $9.00 Was:  Previous Price $30.00
The Frog Prince (Dvd, 2009)The Frog Prince (Dvd, 2009) $3.00 Metal Frog Weight Lifting Candle HoldersMetal Frog Weight Lifting Candle Holders $49.99
Winged Frog Cling Rubber Stamp Paper Parachute New star stripe folk art angelWinged Frog Cling Rubber Stamp Paper Parachute New star stripe folk art angel $9.00 Nwt • Happy Go Lucky Plush Frog Basket • Green •11"x11"x9� 34; •Ages 3 and Up •Mint!Nwt • Happy Go Lucky Plush Frog Basket • Green •11"x11"x9� 34; •Ages 3 and Up •Mint! $18.95
Frog Christmas 10" wearing sparkle scarf Stuffed Plush Gund 88014 Hoppy HolidaysFrog Christmas 10" wearing sparkle scarf Stuffed Plush Gund 88014 Hoppy Holidays $29.99 Lego Monthly Mini Build, In-Store Mo Exclusive Pick The Month Model You WantLego Monthly Mini Build, In-Store Mo Exclusive Pick The Month Model You Want $14.90
KoKo Originals by Athena Boulgarides Wall Plaque with FrogKoKo Originals by Athena Boulgarides Wall Plaque with Frog $10.00 Frog Princess 11" Wearing Pink Dress Stuffed Plush Dan Dee crownFrog Princess 11" Wearing Pink Dress Stuffed Plush Dan Dee crown $9.99
2017 Tcu Horned Frogs Vs Smu Mustangs Ticket Stub 9/16 College Football2017 Tcu Horned Frogs Vs Smu Mustangs Ticket Stub 9/16 College Football $1.99 B0087Au1Li From Tadpole To Frog by Pfeffer, Wendy ( Author ) on Apr-22-1994[ PaB0087Au1Li From Tadpole To Frog by Pfeffer, Wendy ( Author ) on Apr-22-1994[ Pa $3.49
Tobin 2757 Frog Dancer Counted Cross Stitch Kit-7"X10" 14 CountTobin 2757 Frog Dancer Counted Cross Stitch Kit-7"X10" 14 Count $13.19 List price:  Previous Price $15.83 Frog 18" Lg Toad holding Valentine Toadally Yours Heart pillow stuffed plushFrog 18" Lg Toad holding Valentine Toadally Yours Heart pillow stuffed plush $9.99
One Pair The Frog Prince Puncture Ear Stud Womens Mens Unisex EarringOne Pair The Frog Prince Puncture Ear Stud Womens Mens Unisex Earring $11.99 Kermit The Frog Muppet Musicians Of Bremen catgut,mean floyd,caleb Sealed Lp,tvKermit The Frog Muppet Musicians Of Bremen catgut,mean floyd,caleb Sealed Lp,tv $57.80 Was:  Previous Price $289.00
Frog and Toad are Friends (Frog and Toad) (Paperback)Frog and Toad are Friends (Frog and Toad) (Paperback) $15.91 [Osp] Diving Frog Floating Weedless Soft Lure Cf-26 - 6082[Osp] Diving Frog Floating Weedless Soft Lure Cf-26 - 6082 $20.00
Ceramic Frog Toad Figurine Hand painted Mexican Wall Garden Art 6.5"Ceramic Frog Toad Figurine Hand painted Mexican Wall Garden Art 6.5" $15.99 Ganz Webkinz Spotted Frog / Spotted Toad - Nwot - Plush Animal OnlyGanz Webkinz Spotted Frog / Spotted Toad - Nwot - Plush Animal Only $1.99
LeapPad Arthur Makes the Team - Reading for Ages 6-8 by: LeapFrog Leap Pad FrogLeapPad Arthur Makes the Team - Reading for Ages 6-8 by: LeapFrog Leap Pad Frog $10.51 Yard Garden Frolicking Frog Garden Hose Holder Cast IronYard Garden Frolicking Frog Garden Hose Holder Cast Iron $29.99
Frog Green Hearts Yellow Belly 11" Plush Stuffed Soft Velvet Goffa Int'l CorpFrog Green Hearts Yellow Belly 11" Plush Stuffed Soft Velvet Goffa Int'l Corp $9.99 Herschel Supply Co. Chapter Travel Kit in Frog Camo Nwt Free ShipHerschel Supply Co. Chapter Travel Kit in Frog Camo Nwt Free Ship $35.03
Laboratory Guide for the Tudy of the Frog an Introduction to by Bertram G SmithLaboratory Guide for the Tudy of the Frog an Introduction to by Bertram G Smith $34.75 Frog Kids Potty Toilet Training Children Urinal For Boys Pee Trainer Funny BathFrog Kids Potty Toilet Training Children Urinal For Boys Pee Trainer Funny Bath $13.80
Vtg Mid Century 1955 Sun Rubber Co. Toy Cartoon Frog Squeaker Works 5" X 5" X 4"Vtg Mid Century 1955 Sun Rubber Co. Toy Cartoon Frog Squeaker Works 5" X 5" X 4" $14.95 Kuryakyn Frog Mouth Neutral Switch Cover 2025Kuryakyn Frog Mouth Neutral Switch Cover 2025 $27.18
Rubber Stamp by Rubber Heads Fa,la,la,la Christmas FrogRubber Stamp by Rubber Heads Fa,la,la,la Christmas Frog $5.59 Frog Yellow Black Spots Long Legged Poison Arrow Frog Suction Cups Plush FiestaFrog Yellow Black Spots Long Legged Poison Arrow Frog Suction Cups Plush Fiesta $12.99
Frog And A Very Special Day by Velthuijs, Max Paperback Book The Fast FreeFrog And A Very Special Day by Velthuijs, Max Paperback Book The Fast Free $6.75 Tcu Horned Frogs hat Winter ski knit stocking cap Texas Christian UniversityTcu Horned Frogs hat Winter ski knit stocking cap Texas Christian University $9.35
Jim Henson'S Muppet Babies 1984 Emmy ad with 3 awards with young Kermit The FrogJim Henson'S Muppet Babies 1984 Emmy ad with 3 awards with young Kermit The Frog $19.98 Muppet T Shirt disney Face Of Kermit The Frog size XlMuppet T Shirt disney Face Of Kermit The Frog size Xl $7.99
Peace Frogs Adjustable Baseball Cap Hat Navy Blue Leather Strap Size 58cmPeace Frogs Adjustable Baseball Cap Hat Navy Blue Leather Strap Size 58cm $14.99 Was:  Previous Price $19.99 Cute Detailed Sterling Silver Frog Ring size 6 style# r0004Cute Detailed Sterling Silver Frog Ring size 6 style# r0004 $9.89 Was:  Previous Price $10.99
Heckler & Koch H&K G3 Iran Rifle Bayo Knife + Scabbard + Frog - UsedHeckler & Koch H&K G3 Iran Rifle Bayo Knife + Scabbard + Frog - Used $69.99 Howard Robinson 'Green Frog Photograph' Canvas Art [Id 3699001]Howard Robinson 'Green Frog Photograph' Canvas Art [Id 3699001] $39.27 to $87.62 List price:  Previous Price $59.99
Leap Frog Leap Pad Phonics Program Lesson 3 Short Vowels O And E Brand NewLeap Frog Leap Pad Phonics Program Lesson 3 Short Vowels O And E Brand New $15.23 Frog, Hardcover by Yan, Mo; Goldblatt, Howard (Trn), Isbn 0525427988, Isbn-13.Frog, Hardcover by Yan, Mo; Goldblatt, Howard (Trn), Isbn 0525427988, Isbn-13. $14.97 List price:  Previous Price $27.95
Funny Frog Charm Pendant Necklace with a Gift Box Fast ShippingFunny Frog Charm Pendant Necklace with a Gift Box Fast Shipping $9.95 Nanoblock Micro-Sized Building Block Japanese Tree Frog Figure SetNanoblock Micro-Sized Building Block Japanese Tree Frog Figure Set $3.99
Betsey Johnson Crystal Frog Prince Pendant Charm Necklace/Brooch-NwtBetsey Johnson Crystal Frog Prince Pendant Charm Necklace/Brooch-Nwt $3.99 Indonesian / Balinese Handcrafted Wooden Green Frog Kneeling FishingIndonesian / Balinese Handcrafted Wooden Green Frog Kneeling Fishing $7.50
Men's House Slipper Cotton Memory Foam Indoor Outdoor Slippers M-LMen's House Slipper Cotton Memory Foam Indoor Outdoor Slippers M-L $18.99 Leap Frog Learn and Groove Xylophone Zoo Music Lights Animal Sounds Fun PlayLeap Frog Learn and Groove Xylophone Zoo Music Lights Animal Sounds Fun Play $8.48 Was:  Previous Price $9.98
Tcu Horned Frogs 12" x 15" Christmas Garden Flag Ncaa Licensed Texas ChristianTcu Horned Frogs 12" x 15" Christmas Garden Flag Ncaa Licensed Texas Christian $9.99 Yugioh Swap Frog Sovr-En034 Common PYugioh Swap Frog Sovr-En034 Common P $1.98
Baby Starters Polka Dot Frog Rattle Lovey Plush BabyBaby Starters Polka Dot Frog Rattle Lovey Plush Baby $12.99 Fontaine's Fables - "The Sun & the Frogs" - Copper Engraving -1777Fontaine's Fables - "The Sun & the Frogs" - Copper Engraving -1777 $22.99
Keep Quiet Frog Tree Peeker - Durable Polyresin Animal Tree-Hugger SculptureKeep Quiet Frog Tree Peeker - Durable Polyresin Animal Tree-Hugger Sculpture $21.49 10Pcs. Tibetan Silver Frog Toad Charms Pendants Earring Drops Findings Tf2010Pcs. Tibetan Silver Frog Toad Charms Pendants Earring Drops Findings Tf20 $6.39
Hardside Carry On Luggage in Green [Id 3759002]Hardside Carry On Luggage in Green [Id 3759002] $52.48 List price:  Previous Price $180.00 Vintage Green Machine Frog Band Metro Toys Animated with LightsVintage Green Machine Frog Band Metro Toys Animated with Lights $20.00
Ganz Webkinz Plush Lot of 2 Spotted Frog Ts140 Lil Kinz Frog Hs001Ganz Webkinz Plush Lot of 2 Spotted Frog Ts140 Lil Kinz Frog Hs001 $2.18 For Lg G7 ThinQ G710 6.1" Phone Black Tpu Silicone Soft Protective Case CoverFor Lg G7 ThinQ G710 6.1" Phone Black Tpu Silicone Soft Protective Case Cover $9.99
Ribit Frog Enamel Charm Stretch Bracelet Fit Cuff or Rustic Shamballa D-1609Ribit Frog Enamel Charm Stretch Bracelet Fit Cuff or Rustic Shamballa D-1609 $4.99 Frog & Fish Pouches crochet Pattern InstructionsFrog & Fish Pouches crochet Pattern Instructions $2.99
Native American Kachina Susan Kewa FrogNative American Kachina Susan Kewa Frog $10.00 Frog Plush Animal Hats Hat With Ear Flaps New With Tags XFrog Plush Animal Hats Hat With Ear Flaps New With Tags X $1.99
Frog Plush DanDee Silky soft Green & Yellow Stuffed Animal huge large 20" cuddlyFrog Plush DanDee Silky soft Green & Yellow Stuffed Animal huge large 20" cuddly $19.99 Pam's Patchwork Pie Bird Funnel/Vent * Frog * by Pam HogePam's Patchwork Pie Bird Funnel/Vent * Frog * by Pam Hoge $22.50
Ctmh D1115 Princess ~ Castle,Kiss A Frog, Crown, Lips, B'FlyCtmh D1115 Princess ~ Castle,Kiss A Frog, Crown, Lips, B'Fly $6.29 Was:  Previous Price $6.99 Disney'S Magic Clip Princess Tiana And Prince FrogDisney'S Magic Clip Princess Tiana And Prince Frog $9.99
Vintage Van Briggle Low Bowl Vase w/ Flower Frog  2 Pc Set Brown and Green GlazeVintage Van Briggle Low Bowl Vase w/ Flower Frog  2 Pc Set Brown and Green Glaze $26.80 You Have to Kiss a Lot of FrogsYou Have to Kiss a Lot of Frogs $3.69
Harmony Kingdom Lover's Leap Frogs Trinket Box signed 2000Harmony Kingdom Lover's Leap Frogs Trinket Box signed 2000 $14.00 Ensky JoJo's Bizarre Adventure Talking Frog Plush Doll Us SellerEnsky JoJo's Bizarre Adventure Talking Frog Plush Doll Us Seller $45.00
Frog crinkle squeak dog baby toy 2010 Target animal adventure plush green yellowFrog crinkle squeak dog baby toy 2010 Target animal adventure plush green yellow $9.99 The Year of the Frog : A Novel (ExLib) by Martin M. SimeckaThe Year of the Frog : A Novel (ExLib) by Martin M. Simecka $4.18
Baby Infant Rattles Plush Animal Stroller Hanging Bell Play Toy Doll Soft Bed UsBaby Infant Rattles Plush Animal Stroller Hanging Bell Play Toy Doll Soft Bed Us $3.89 to $9.89 Vintage Sterling Silver Frog Pin/Brooch Moving Legs 7.2gramsVintage Sterling Silver Frog Pin/Brooch Moving Legs 7.2grams $23.92 Was:  Previous Price $29.90
Frog Toys,12 Pack Mini Rubber Frog sets,Food Grade Material Tpr SuperFrog Toys,12 Pack Mini Rubber Frog sets,Food Grade Material Tpr Super $11.66 Bronze Frogs StatueBronze Frogs Statue $12.00
Usa Seller Frog Ring Sterling Silver 925 Best Price Jewelry Plain SelectableUsa Seller Frog Ring Sterling Silver 925 Best Price Jewelry Plain Selectable $12.00 Was:  Previous Price $14.28 2018 Hot Wheels #8 Wb Looney Tunes Horseplay Michigan J Frog2018 Hot Wheels #8 Wb Looney Tunes Horseplay Michigan J Frog $5.25
Baltic Amber w/ 925 Sterling Silver Frog 5gr 2" w/ bail 21115KBaltic Amber w/ 925 Sterling Silver Frog 5gr 2" w/ bail 21115K $15.00 Smoochy The Frog, Ty Teenie Beanie, Very Good ConditionSmoochy The Frog, Ty Teenie Beanie, Very Good Condition $4.99
New in Package Leap Pad Frog Pre-Reading Tutters Tiny Trip Book & CartridgeNew in Package Leap Pad Frog Pre-Reading Tutters Tiny Trip Book & Cartridge $9.99 E.D. Baker Tales of the Frog Princess Books 1 2 3 4 Dragon's Breath Curse MagicE.D. Baker Tales of the Frog Princess Books 1 2 3 4 Dragon's Breath Curse Magic $17.99
Fishing Lure with Tackle Box Included Pencil Bait Popper Fish Frogs for BassFishing Lure with Tackle Box Included Pencil Bait Popper Fish Frogs for Bass $36.49 Well Balanced Carbon Fiber Violin Bow Round Stick Ebony Frog Faux Pearl SuppliesWell Balanced Carbon Fiber Violin Bow Round Stick Ebony Frog Faux Pearl Supplies $32.41
Pirates On The High Seas: Book and Ship Kit (2007, Flying Frog) - New, Sealed!Pirates On The High Seas: Book and Ship Kit (2007, Flying Frog) - New, Sealed! $19.85 Teenage Mutant Ninja Turtles 1989 Tmnt Genghis Frog Mirage Studios Playmate RareTeenage Mutant Ninja Turtles 1989 Tmnt Genghis Frog Mirage Studios Playmate Rare $4.44
Vintage Frog BroachVintage Frog Broach $19.99 Official Brigid Ashwood Witchen Kitsch Leather Book Case For Lenovo PhonesOfficial Brigid Ashwood Witchen Kitsch Leather Book Case For Lenovo Phones $14.95 List price:  Previous Price $29.90
Fisher-Price Sit-Me-Up Floor Seat Frog Frustration Free PackagingFisher-Price Sit-Me-Up Floor Seat Frog Frustration Free Packaging $57.18 Frog Red White Toad-ally in Love Valentine Heart 16" Dan Dee Stuffed Plush RareFrog Red White Toad-ally in Love Valentine Heart 16" Dan Dee Stuffed Plush Rare $24.99
Click to see more Frog items at www.ebay.com
Prices current as of last update, 03/21/19 9:01pm.

Home Contact Resources Exchange Links eBay