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!]

Frog Ceramic Planter Or Trinket Bowl Hand Made Pre OwnedFrog Ceramic Planter Or Trinket Bowl Hand Made Pre Owned $40.00 Vintage Avon Perfume Bottles - 1970's Decanters Collectibles - Empty - 3 Full!Vintage Avon Perfume Bottles - 1970's Decanters Collectibles - Empty - 3 Full! $25.00
Frog 1960’s 1970’s Vintage Deco with Black PigFrog 1960’s 1970’s Vintage Deco with Black Pig $12.99 Used Vintage 7" Jointed Drifter Tackle Co "The Believer" Musky fishing Lure frogUsed Vintage 7" Jointed Drifter Tackle Co "The Believer" Musky fishing Lure frog $8.75
Leapster Leap Frog Wolverine And The X-Men Game Only Cartridge K-2 5-8 TestedLeapster Leap Frog Wolverine And The X-Men Game Only Cartridge K-2 5-8 Tested $5.00 Gold Toned Ladies "Frog" Key Chain-With Several Colored Jewels & ChrystalsGold Toned Ladies "Frog" Key Chain-With Several Colored Jewels & Chrystals $7.99
Terrie Floyd Wooden Frog Pull Toy 842/10,000 vintageTerrie Floyd Wooden Frog Pull Toy 842/10,000 vintage $20.00 Vintage Ardco Anthropomorphic Frog Talking On Telephone 3.5" Tall 3" wide.Vintage Ardco Anthropomorphic Frog Talking On Telephone 3.5" Tall 3" wide. $3.00
Danielle Nicole Princess & The Frog Tiana Mini Backpack - New With Small Flaw!Danielle Nicole Princess & The Frog Tiana Mini Backpack - New With Small Flaw! $48.00 Bandai Frog Style Collection Harvest FrogBandai Frog Style Collection Harvest Frog $4.99
In Search of Lost Frogs by Robin Moore (2014, Hardcover)In Search of Lost Frogs by Robin Moore (2014, Hardcover) $3.75 Vintage Ceramic Porcelain Goodsell Products No. 222 Floral FrogVintage Ceramic Porcelain Goodsell Products No. 222 Floral Frog $8.00
Vintage Señor Frog's Nassau Bahamas Navy T-Shirt Xl DoubleSided Awesome GraphicsVintage Señor Frog's Nassau Bahamas Navy T-Shirt Xl DoubleSided Awesome Graphics $12.99 Vintage Green Uranium Glass Flower Frog 3" Glows Under Uv Blacklight 11 HolesVintage Green Uranium Glass Flower Frog 3" Glows Under Uv Blacklight 11 Holes $17.99
1 Vtg Flower Arranging Frog 19 hole clear Heavy glass very old1 Vtg Flower Arranging Frog 19 hole clear Heavy glass very old $9.00 Teenage Mutant Ninja Turtles Tmnt Playmates AutoMutations Night Ninja Raph NibTeenage Mutant Ninja Turtles Tmnt Playmates AutoMutations Night Ninja Raph Nib $11.50
Zina Frog Sterling PendantZina Frog Sterling Pendant $30.00 Girl's Size 6 M 3-6 Months Two Piece Carter's Gray "Little Sis" Top & Frog PantsGirl's Size 6 M 3-6 Months Two Piece Carter's Gray "Little Sis" Top & Frog Pants $8.00
Vintage Glass Frogs w/ Feet -19 Holes- (2) 11 Holes & 1 Eight HoleVintage Glass Frogs w/ Feet -19 Holes- (2) 11 Holes & 1 Eight Hole $4.99 Blue Sunstone & Garnet (Simulated) 925 Sterling Silver Frog Ring s.7.5 R1189-9Blue Sunstone & Garnet (Simulated) 925 Sterling Silver Frog Ring s.7.5 R1189-9 $8.99
(3) Vicious Fishing Topwater 2 1/2" Vf Frog 3/8 Oz Mud Brown Vf60-Mb Brand New(3) Vicious Fishing Topwater 2 1/2" Vf Frog 3/8 Oz Mud Brown Vf60-Mb Brand New $4.99 Brand new Build-A-Bear Spring Green Frog Plush Stuffed ToyBrand new Build-A-Bear Spring Green Frog Plush Stuffed Toy $20.00
Adventures of Frog & Toad (I Can Read Series) - Hardcover By Arnold Lobel - GoodAdventures of Frog & Toad (I Can Read Series) - Hardcover By Arnold Lobel - Good $1.25 Vintage Glass Potpourri Jar Frog Lily Pads Metal Pewter? Lid Estate Find Nice!Vintage Glass Potpourri Jar Frog Lily Pads Metal Pewter? Lid Estate Find Nice! $7.99
Adorable Nwt Ganz Plush Tree Frog Webkinz Lil KinzAdorable Nwt Ganz Plush Tree Frog Webkinz Lil Kinz $10.00 Vtg Texas Christian College Vase Flower Pottery Ft Worth Texas Frog Trenton NjVtg Texas Christian College Vase Flower Pottery Ft Worth Texas Frog Trenton Nj $19.95
Frog Serene Bromine Cartridge Prefilled Hot Tub Spa Sanitizer. Brand New. 5.3 OzFrog Serene Bromine Cartridge Prefilled Hot Tub Spa Sanitizer. Brand New. 5.3 Oz $8.99 Vintage Muppets Kermit the Frog Figurine Painting Kit New Avalon 1977 Vintage Muppets Kermit the Frog Figurine Painting Kit New Avalon 1977  $9.75
Vtg Reed & Barton Silverplate Birthday Candle Holders (6) Animals Frog Duck etcVtg Reed & Barton Silverplate Birthday Candle Holders (6) Animals Frog Duck etc $9.99 Robyn Hitchcock Globe Of Frogs Promo / Heaven 17 How Men Are - 80s Vinyl Lot Robyn Hitchcock Globe Of Frogs Promo / Heaven 17 How Men Are - 80s Vinyl Lot  $15.00
Retired Hagen Renaker Specially Frog Playing Saxophone 1.25"Retired Hagen Renaker Specially Frog Playing Saxophone 1.25" $20.00 vintage frog stuffed animalvintage frog stuffed animal $9.00
2018 McDonald's National Geo Kids Happy Meal Toy Lot Of 3 Tiger-Frog-Sea Turtle2018 McDonald's National Geo Kids Happy Meal Toy Lot Of 3 Tiger-Frog-Sea Turtle $1.00 Frog - Owyhee Opal 925 Sterling Silver Ring Jewelry s.8 Br143370Frog - Owyhee Opal 925 Sterling Silver Ring Jewelry s.8 Br143370 $14.99
Mini Boden Fall Boys Printed Sweatshirt Grey Marl Bonkers Conkers Pumpkin FrogMini Boden Fall Boys Printed Sweatshirt Grey Marl Bonkers Conkers Pumpkin Frog $22.00 Vintage Gymboree Frog Dandelion Wishes PurseVintage Gymboree Frog Dandelion Wishes Purse $6.00
Zoomerang! Child Party Invitations, 8, Frog with Magic Hat.Zoomerang! Child Party Invitations, 8, Frog with Magic Hat. $4.00 Muppets Plush Doll Set Of 2 Learn to Dress Kermit Frog Fireman & Miss Piggy M.D.Muppets Plush Doll Set Of 2 Learn to Dress Kermit Frog Fireman & Miss Piggy M.D. $19.99
Vintage Gold Filled Krementz Rhinestone Frog Toad Brooch PinVintage Gold Filled Krementz Rhinestone Frog Toad Brooch Pin $9.99 20pcs Jig Bait Lure-3 jig head Fishing Hooks, 8 Swim tail,6 Jig Baits, 1 Frog20pcs Jig Bait Lure-3 jig head Fishing Hooks, 8 Swim tail,6 Jig Baits, 1 Frog $1.00
Vintage Fred Arbogast Arbo-Gaster Deep Diving Lure Lures Frog SpotVintage Fred Arbogast Arbo-Gaster Deep Diving Lure Lures Frog Spot $5.00 Funko Pop! Deluxe Frog Of Thunder #983 - Target Exclusive Loki Brand New In HandFunko Pop! Deluxe Frog Of Thunder #983 - Target Exclusive Loki Brand New In Hand $75.00
Oriental Girls Dress 14 Large Pink Satin Floral Frog Knot Mandarin CollarOriental Girls Dress 14 Large Pink Satin Floral Frog Knot Mandarin Collar $4.99 Vintage Frog fishing lure black rubberVintage Frog fishing lure black rubber $7.95
Leap Frog School Bus 1999Leap Frog School Bus 1999 $15.00 Tanzanite Quartz & Garnet (Simulated) 925 Sterling Silver Frog Ring s.7.5 R118-5Tanzanite Quartz & Garnet (Simulated) 925 Sterling Silver Frog Ring s.7.5 R118-5 $8.99
Vintage - Burke Spinning Rubber Frog -  Fishing Lure - In Orig. PackageVintage - Burke Spinning Rubber Frog -  Fishing Lure - In Orig. Package $13.99 rare beanie baby , retired 1997 "smoochie" the frog Nwtrare beanie baby , retired 1997 "smoochie" the frog Nwt $15.00
Leap 1 Frog Leapster Cartridge OnlyLeap 1 Frog Leapster Cartridge Only $5.99 Vintage Garden Club Flower Frog Holder / Beagle Mfg Co / NosVintage Garden Club Flower Frog Holder / Beagle Mfg Co / Nos $8.00
Ty The Attic Treasures Collection Vintage 1993 King Frog w/ Cape 10” 6140Ty The Attic Treasures Collection Vintage 1993 King Frog w/ Cape 10” 6140 $6.99 I Can Read Level 2 Ser.: Frog and Toad Are Friends by Arnold Lobel (2003, TradeI Can Read Level 2 Ser.: Frog and Toad Are Friends by Arnold Lobel (2003, Trade $2.00
Leap Frog "Scout the dog' Fridge Phonics -Base Only-Leap Frog "Scout the dog' Fridge Phonics -Base Only- $9.99 LuLaRoe Disney Size 2Xl Randy Kermit the Frog Muppets Lavender Melon White NwtLuLaRoe Disney Size 2Xl Randy Kermit the Frog Muppets Lavender Melon White Nwt $5.99
Squishmallows Wendy the Frog 16 inch Plush ToySquishmallows Wendy the Frog 16 inch Plush Toy $21.00 LuLaRoe Disney Size L Randy Kermit the Frog Muppets Blue Sea Foam Green NwtLuLaRoe Disney Size L Randy Kermit the Frog Muppets Blue Sea Foam Green Nwt $5.99
Doorables Series 7 Dr. Facilier From The Princess And The Frog / Ultra RareDoorables Series 7 Dr. Facilier From The Princess And The Frog / Ultra Rare $10.00 Vintage Early C. Schilpp Frog Spinning Metal Lure AntiqueVintage Early C. Schilpp Frog Spinning Metal Lure Antique $12.95
3 Vintage Brass Frogs Paperweights3 Vintage Brass Frogs Paperweights $9.99 Australia 2003, Rainforest, orange-thighed tree frog, 50 cents, accept offersAustralia 2003, Rainforest, orange-thighed tree frog, 50 cents, accept offers $3.33
Vintage Art Glass Large Blue Frog Paper WeightVintage Art Glass Large Blue Frog Paper Weight $50.00 Fiji ,frogs Wwf,Mnh S.C.#591-94 S.C.V.$21+ Complete set of 4 issued in 1988Fiji ,frogs Wwf,Mnh S.C.#591-94 S.C.V.$21+ Complete set of 4 issued in 1988 $4.99
Art Pottery Glaze Vase With Engraved Frogs Signed By The ArtistArt Pottery Glaze Vase With Engraved Frogs Signed By The Artist $39.99 Vintage Lot of 2 Metal Flower Frogs Pin Cushion Ikebana Floral DesignVintage Lot of 2 Metal Flower Frogs Pin Cushion Ikebana Floral Design $9.99
Lilly Pulitzer Girls Small shirt dress Pima Cotton Flower Blue Pink DefectLilly Pulitzer Girls Small shirt dress Pima Cotton Flower Blue Pink Defect $5.00 Alter Nation - Albert Vii The Human Frog Hybrid- Action FigureAlter Nation - Albert Vii The Human Frog Hybrid- Action Figure $5.99
Women's Capelli New York Plaid Lined Rain Boots Rubber Size 8Women's Capelli New York Plaid Lined Rain Boots Rubber Size 8 $12.95 Nib 2003 Frog Prince Hand Crafted Glass Ornament 4" in his Case Vibrant ColorsNib 2003 Frog Prince Hand Crafted Glass Ornament 4" in his Case Vibrant Colors $9.99
3 Frog Sterling Silver .925 Ring. Size 8.53 Frog Sterling Silver .925 Ring. Size 8.5 $10.00 Repro Leather Bayonet Scabbard Frog.Repro Leather Bayonet Scabbard Frog. $14.00
Rebel 2.5 inches Pop'N Frog Topwater BaitRebel 2.5 inches Pop'N Frog Topwater Bait $5.99 Golden Frog Faux Pearl Jelly Belly Brooch - UnsignedGolden Frog Faux Pearl Jelly Belly Brooch - Unsigned $11.50
Mr and Mrs Pondhopper By RussMr and Mrs Pondhopper By Russ $22.60 Box of Frogs: Box of Frogs Epic Original Pressing Ex LpBox of Frogs: Box of Frogs Epic Original Pressing Ex Lp $15.95
Señor Frogs-Playa Men’s Xl Gray Tank Top & Nautica Men’s Xl Tank Top- Navy BlueSeñor Frogs-Playa Men’s Xl Gray Tank Top & Nautica Men’s Xl Tank Top- Navy Blue $12.49 🦇 Lot Complete Super Powers Robin vs The Riddler Vintage 1989 Dc Toy Biz Batman🦇 Lot Complete Super Powers Robin vs The Riddler Vintage 1989 Dc Toy Biz Batman $19.69
Ty Beanie Plush Lot of 2- Smoochy the Frog-Morrie the Eel- Beanie CollectionTy Beanie Plush Lot of 2- Smoochy the Frog-Morrie the Eel- Beanie Collection $35.00 Vintage Makit & Bakit Crystals Multi colors Lot Frog And Misc Pieces OriginalVintage Makit & Bakit Crystals Multi colors Lot Frog And Misc Pieces Original $4.99
Vintage Jewelry Lot Jj Jonette Signed Animal Earrings Cat Reindeer FrogVintage Jewelry Lot Jj Jonette Signed Animal Earrings Cat Reindeer Frog $29.00 Tourmalated Golden Rutile Quartz (Simulated) 925 Silver Frog Ring s.8 T8697Tourmalated Golden Rutile Quartz (Simulated) 925 Silver Frog Ring s.8 T8697 $7.99
9 Tigger Tweety Big Bird Harley Davidson Eagle The Count Frog Mouse Monkey Bear9 Tigger Tweety Big Bird Harley Davidson Eagle The Count Frog Mouse Monkey Bear $15.50 Vintage Vtg Sheet Hallmark Stickers ~ Cute Animals Frog Bugs Bird Mouse MiceVintage Vtg Sheet Hallmark Stickers ~ Cute Animals Frog Bugs Bird Mouse Mice $5.00
Vintage Ardco Porcelain Mailman Frog FigurineVintage Ardco Porcelain Mailman Frog Figurine $3.00 Stanley Plane Frog With Mounting Screws, Steel Depth Adj. Wheel 1-15/16" WideStanley Plane Frog With Mounting Screws, Steel Depth Adj. Wheel 1-15/16" Wide $10.00
Lot of 3 Zen Frogs - See, Speak, Hear No Evil - Metallic Bronze FinishLot of 3 Zen Frogs - See, Speak, Hear No Evil - Metallic Bronze Finish $29.00 Vintage Miss Piggy & Kermit the Frog Bookmark Henson Associates Hallmark 1980Vintage Miss Piggy & Kermit the Frog Bookmark Henson Associates Hallmark 1980 $25.99
Li'l Woodzeez Lot - Duck Family, Squirrel Family, And Frog Family with booksLi'l Woodzeez Lot - Duck Family, Squirrel Family, And Frog Family with books $7.00 Harry Potter Chocolate Frog Lenticular Card 12 Card Set Potter Family Chase 2004Harry Potter Chocolate Frog Lenticular Card 12 Card Set Potter Family Chase 2004 $4.95
🙋 Ww Ii 1/72 ( Messerschmitt Bomber ) - Airplane Model🙋 Ww Ii 1/72 ( Messerschmitt Bomber ) - Airplane Model $9.00 Kermit the Frog Sketch Card Limited 23/50 Edward Vela SignedKermit the Frog Sketch Card Limited 23/50 Edward Vela Signed $1.99
Playskool Wooden Puzzles Garfield Frog BearPlayskool Wooden Puzzles Garfield Frog Bear $19.99 dark green glazed ceramic frog succulent planter/candle Holderdark green glazed ceramic frog succulent planter/candle Holder $5.50
Toadily Hoppy Here! Happy Frog Figurine Gibson Greeting Cards Usa 1977 vintageToadily Hoppy Here! Happy Frog Figurine Gibson Greeting Cards Usa 1977 vintage $9.99 Xoxo Black Floral Cheongsam Dress Size 7Xoxo Black Floral Cheongsam Dress Size 7 $16.00
Disney Princess & the Frog Tiana Embroidered Tshirt Green Hello Kitty SanrioDisney Princess & the Frog Tiana Embroidered Tshirt Green Hello Kitty Sanrio $19.99 Diamond Select - Minimates - The Muppets - Formal Kermit & Miss Piggy - 16 SdccDiamond Select - Minimates - The Muppets - Formal Kermit & Miss Piggy - 16 Sdcc $18.50
Vintage Vtg Sheet Hallmark Stickers ~ Cute Bugs Turtle Frog InsectsVintage Vtg Sheet Hallmark Stickers ~ Cute Bugs Turtle Frog Insects $3.00 Vintage Bill Plummer Weedless FrogVintage Bill Plummer Weedless Frog $7.95
Baby Bib Tag Lunchtime with Frog. Brand New with Tag.Baby Bib Tag Lunchtime with Frog. Brand New with Tag. $6.99 Funko pop Frog of ThunderFunko pop Frog of Thunder $19.99
Click to see more Frog items at www.ebay.com
Prices current as of last update, 08/25/22 1:01pm.

Home Contact Resources Exchange Links eBay