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!]

Pre owned Ty Beanie Disney Kermit Frog 16" Plush CollectablePre owned Ty Beanie Disney Kermit Frog 16" Plush Collectable $7.99 Mali signed Limited 4/97 Articulated Frog drop Safety pin BarBack Groovy FroggyMali signed Limited 4/97 Articulated Frog drop Safety pin BarBack Groovy Froggy $11.11
Vintage Estate Jewelry Large Gold tone Frog Pave Rhinestone Crystal Brooch PinVintage Estate Jewelry Large Gold tone Frog Pave Rhinestone Crystal Brooch Pin $4.49 The Princess and the Frog [Original Songs and Score] by Randy Newman (Cd,.The Princess and the Frog [Original Songs and Score] by Randy Newman (Cd,. $1.40
Frog Froggy Rainboots Little Girls Size 3 Green Rain Boots Galoshes New SplashFrog Froggy Rainboots Little Girls Size 3 Green Rain Boots Galoshes New Splash $1.99 Kermit The Frog Lenox Ornament, MuppetsKermit The Frog Lenox Ornament, Muppets $34.99
Lot Of (5) Leap Frog Learning Dvds * Letter Factory * Math * Phonics * Reading *Lot Of (5) Leap Frog Learning Dvds * Letter Factory * Math * Phonics * Reading * $30.00 Frog Burlap House Flag - 31x39 by EvergreenFrog Burlap House Flag - 31x39 by Evergreen $25.00
Triari Frog BroochTriari Frog Brooch $15.00 Vintage Finished Frog Latch Hook Rug Pillow 1970s 12”Vintage Finished Frog Latch Hook Rug Pillow 1970s 12” $12.50
1816 -3 Antique Engravings - Anurans - Surinam Toad & Green Frog - Pierre Turpin1816 -3 Antique Engravings - Anurans - Surinam Toad & Green Frog - Pierre Turpin $12.00 Frog and Toad Storybook Favorites Includes 4 Stories + Stickers! Great ConditionFrog and Toad Storybook Favorites Includes 4 Stories + Stickers! Great Condition $2.95
Nwt LulaRoe Carly Xs Swing Hi-Low Hem Dress Disney Kermit the Frog Mint GreenNwt LulaRoe Carly Xs Swing Hi-Low Hem Dress Disney Kermit the Frog Mint Green $8.99 Gund Nursery Rhyme Frog w Croaker 17" Plush Green Soft Cuddly w/ TagGund Nursery Rhyme Frog w Croaker 17" Plush Green Soft Cuddly w/ Tag $4.99
Vtg. Sterling Silver finely detailed frog toad large drop pierced earrings, 7 gVtg. Sterling Silver finely detailed frog toad large drop pierced earrings, 7 g $35.00 Girls Carters frog winter pjs size 10(Guc)Girls Carters frog winter pjs size 10(Guc) $3.99
1988 Schmid Fw Beatrix Potter Jeremy Fisher Frog Ceramic Ornament w/metal box1988 Schmid Fw Beatrix Potter Jeremy Fisher Frog Ceramic Ornament w/metal box $14.00 1970's Avon Tiny Frog Tac Lapel Pin Brushed Goldtone Green Rhinestone Eyes1970's Avon Tiny Frog Tac Lapel Pin Brushed Goldtone Green Rhinestone Eyes $10.00
Vintage 60s Gold Tone Green Enamel Textured Frog Toad Brooch PinVintage 60s Gold Tone Green Enamel Textured Frog Toad Brooch Pin $12.99 Frog Blood Smear Microscope SlideFrog Blood Smear Microscope Slide $5.00
Fiesta Toys Cincinnati Reds Beanbag Frog Plush 11.5” Genuine Mlb MerchandiseFiesta Toys Cincinnati Reds Beanbag Frog Plush 11.5” Genuine Mlb Merchandise $14.00 Van Briggle Pottery Flower Frog with Oak Leaves - Ming TurquoiseVan Briggle Pottery Flower Frog with Oak Leaves - Ming Turquoise $21.99
Vintage Glass Floral Frog/Round Pen (19) Holder/Paperweight NwobVintage Glass Floral Frog/Round Pen (19) Holder/Paperweight Nwob $11.99 Vintage Frog Playing Flute bank, 6" tall, circa 1980sVintage Frog Playing Flute bank, 6" tall, circa 1980s $4.00
Beautiful Clear Leaded Glass Frog Votive Candle Holder ~bx53Beautiful Clear Leaded Glass Frog Votive Candle Holder ~bx53 $19.99 Dept 56 Krinkles 30Th Anniversary Poinsettia Frog Jeweled Box/retired NibDept 56 Krinkles 30Th Anniversary Poinsettia Frog Jeweled Box/retired Nib $45.00
Antique Norwood Ceramic Flower Frog/Vase-Beatifully Colored/GlazedAntique Norwood Ceramic Flower Frog/Vase-Beatifully Colored/Glazed $18.00 "Cameo Frogs" Green Frogs Cotton Fabric Pink Lily Pads 1 1/2 yd x 44"W"Cameo Frogs" Green Frogs Cotton Fabric Pink Lily Pads 1 1/2 yd x 44"W $3.95
Pair of Gardening Frogs with bucket spade bowl 19" high resin? New No BoxPair of Gardening Frogs with bucket spade bowl 19" high resin? New No Box $59.99 Brand New! Disney Baby Mickey Mouse + Frog, Boys' 3-6 Months 1-Piece Bodysuit!Brand New! Disney Baby Mickey Mouse + Frog, Boys' 3-6 Months 1-Piece Bodysuit! $7.95
Flower Frog Vintage Heavy Clear Glass , removeable top, 16 holesFlower Frog Vintage Heavy Clear Glass , removeable top, 16 holes $5.00 Fly Fishing Flies Lot. Hand Tied. Frogs. Spinners W/ Pocket Clam BoxFly Fishing Flies Lot. Hand Tied. Frogs. Spinners W/ Pocket Clam Box $14.99
Vintage Gemmy Interactive Frog Singing Trio 'Joy to the World' New in Box 2001Vintage Gemmy Interactive Frog Singing Trio 'Joy to the World' New in Box 2001 $34.90 Ceramic Decorative Butter Cheese Dish Flowers, Inc Balloons, Frogs, Lily PadsCeramic Decorative Butter Cheese Dish Flowers, Inc Balloons, Frogs, Lily Pads $15.99
Vintage Cast Iron Frog Trivet Planter Base Multiple Frogs Farm House DecorVintage Cast Iron Frog Trivet Planter Base Multiple Frogs Farm House Decor $39.99 Elongated Souvenir Penny:Rainforest Cafe Orlando Florida(Frog with orange) Z 96AElongated Souvenir Penny:Rainforest Cafe Orlando Florida(Frog with orange) Z 96A $1.79
Folkmanis Folktails Hand Puppet Large Jumbo Full Body Bullfrog Frog 18" New TagFolkmanis Folktails Hand Puppet Large Jumbo Full Body Bullfrog Frog 18" New Tag $19.10 Unique .925 Sterling Silver Detailed Frog Earrings style# e1069Unique .925 Sterling Silver Detailed Frog Earrings style# e1069 $8.50
Smoochy the Frog Beanie Baby*Errors* Rare* 1997 -Retired- Mwmt #184-3Smoochy the Frog Beanie Baby*Errors* Rare* 1997 -Retired- Mwmt #184-3 $9.99 Chicago Bears Snowman glass blown ornamentChicago Bears Snowman glass blown ornament $8.99
Lot 3 Vintage Gadjo Corp. Plastic Flower Holder Flower Fashioner Flower FrogsLot 3 Vintage Gadjo Corp. Plastic Flower Holder Flower Fashioner Flower Frogs $9.99 Disney Prince Naveen Doll Princess And The Frog Tiana dolls 12 InchDisney Prince Naveen Doll Princess And The Frog Tiana dolls 12 Inch $31.99
From A Frog To A Prince, Answers In GenesisFrom A Frog To A Prince, Answers In Genesis $7.99 Wwi German 98/05 Mauser Butcher Bayo Frog-Dated 1915Wwi German 98/05 Mauser Butcher Bayo Frog-Dated 1915 $57.00
Vintage Frog Creamer Pitcher and Sugar Bowl Made In JapanVintage Frog Creamer Pitcher and Sugar Bowl Made In Japan $19.99 Frog math balance learning Game, NibFrog math balance learning Game, Nib $4.99
7 Savage Gear Lily Ninja Frogs and Mice New7 Savage Gear Lily Ninja Frogs and Mice New $39.99 Frog Topped Trinket Dish Or Jar. Perennial Friends 2004Frog Topped Trinket Dish Or Jar. Perennial Friends 2004 $3.00
Adorable Frog Plush Easter/Treat/Play/ Basket Green/Yellow W/Butterfly~NwtAdorable Frog Plush Easter/Treat/Play/ Basket Green/Yellow W/Butterfly~Nwt $5.95 Macy'S First Impressions Large Plush Green FrogMacy'S First Impressions Large Plush Green Frog $15.99
Lularoe Disney Nightmare Medium Gigi & Os Princess Frog Mask Leggings Lot New!Lularoe Disney Nightmare Medium Gigi & Os Princess Frog Mask Leggings Lot New! $9.99 Frog FigurineFrog Figurine $4.00
Sgt. Frog Sergeant Frog Corporal Giroro plush keychain rare anime mangaSgt. Frog Sergeant Frog Corporal Giroro plush keychain rare anime manga $11.99 Vintage Frog Scrubby Sponge Holder Ceramic retro 70s NiceVintage Frog Scrubby Sponge Holder Ceramic retro 70s Nice $11.50
Vintage Kermit The Frog Plush Baby Kermit 1987 Henson 7"Vintage Kermit The Frog Plush Baby Kermit 1987 Henson 7" $5.00 925 Sterling Silver Frog S-Hook Clasp Woven Carnelian Wood Beaded Cord Necklace925 Sterling Silver Frog S-Hook Clasp Woven Carnelian Wood Beaded Cord Necklace $21.99
Vintage 1979 Russ Berrie Woggles Frog Green Stuffed Plush 14 Inch Nut ShellVintage 1979 Russ Berrie Woggles Frog Green Stuffed Plush 14 Inch Nut Shell $17.40 Boxwood Hand Carved Japanese Netsuke Sculpture Toad Frog Lotus Leaf #06082006Boxwood Hand Carved Japanese Netsuke Sculpture Toad Frog Lotus Leaf #06082006 $12.99
Leap Frog - Math Circus (Dvd, 2004)Leap Frog - Math Circus (Dvd, 2004) $9.00 Unique Vintage Wicker Frog Shaper Planter Basket Green Eyes Tan Bull FrogUnique Vintage Wicker Frog Shaper Planter Basket Green Eyes Tan Bull Frog $19.40
Stanley Sz. 4 Frog, Mounting Screws With 1-1/4" Brass Adj Wheel Mkd. 466Stanley Sz. 4 Frog, Mounting Screws With 1-1/4" Brass Adj Wheel Mkd. 466 $15.00 Heddon 3500 Luny Frog Box in Rare 3509 D Green Scale ! Special Order Wow!Heddon 3500 Luny Frog Box in Rare 3509 D Green Scale ! Special Order Wow! $12.50
LeapFrog Leap Frog Reader Stylus Pen Bundle; Lots of Books! blue/green #21301LeapFrog Leap Frog Reader Stylus Pen Bundle; Lots of Books! blue/green #21301 $8.00 Silver Frog Pugster Charm Bead Add On To European & Pandora BraceletsSilver Frog Pugster Charm Bead Add On To European & Pandora Bracelets $3.99
Vintage Indian Effigy Pottery Pipe - Beaver and FrogVintage Indian Effigy Pottery Pipe - Beaver and Frog $95.00 Leap Frog Epic Academy Edition Kids Learning Tablet Quad Core WiFi 16Gb - 4Leap Frog Epic Academy Edition Kids Learning Tablet Quad Core WiFi 16Gb - 4 $39.00
Country Farmhouse Mason Jar Frog Lid Rustic BrownCountry Farmhouse Mason Jar Frog Lid Rustic Brown $5.95 1920's Jb Cole Nc Pottery 2 Handle Frog, Centerpiece, Blue & White Flambe Glaze1920's Jb Cole Nc Pottery 2 Handle Frog, Centerpiece, Blue & White Flambe Glaze $20.00
Kiss The Frog / Prince Inside-Out Stuffed ToyKiss The Frog / Prince Inside-Out Stuffed Toy $10.00 Vintage Occupied Japan Ceramic Flower Frog 4 1/2” Dots In Beige 3 Footed PrettyVintage Occupied Japan Ceramic Flower Frog 4 1/2” Dots In Beige 3 Footed Pretty $9.99
Mexican Folk Art Taxidermy Drunk Frog Passed Out With Corona Beer Iv InfusionMexican Folk Art Taxidermy Drunk Frog Passed Out With Corona Beer Iv Infusion $48.00 Lot Of 3 Vintage Figurine Pencil Sharpeners - Frog w Flute, Duck, Eiffel TowerLot Of 3 Vintage Figurine Pencil Sharpeners - Frog w Flute, Duck, Eiffel Tower $12.50
Boyds Bears Fishing Lot (2), Wally McFly, Bailey With Frog, Mwt, RetiredBoyds Bears Fishing Lot (2), Wally McFly, Bailey With Frog, Mwt, Retired $16.99 Strike King Pearl Rage Toad 4" Topwater Buzz Frog Soft Plastic Lure 3pkStrike King Pearl Rage Toad 4" Topwater Buzz Frog Soft Plastic Lure 3pk $3.50
Vintage Pair Frog Lily Pad Leaf Figural Candle Holder Brass Verdigris Patina 5"Vintage Pair Frog Lily Pad Leaf Figural Candle Holder Brass Verdigris Patina 5" $5.50 New Lunkerhunt Lunker Frog Croaker fishing lureNew Lunkerhunt Lunker Frog Croaker fishing lure $7.50
Vintage Wooden Frog Desk Top Paper & Card HolderVintage Wooden Frog Desk Top Paper & Card Holder $2.95 Vintage Cast Iron 5 1/2” Long Garden FrogVintage Cast Iron 5 1/2” Long Garden Frog $10.00
Louisville Stoneware Covered Casserole with Frog Figural Lid, CloversLouisville Stoneware Covered Casserole with Frog Figural Lid, Clovers $25.00 Leap Frog Letter Factory Game. Pre K - Cartridge OnlyLeap Frog Letter Factory Game. Pre K - Cartridge Only $1.99
Ceramic Frog Toad Incense Burner Made In JapanCeramic Frog Toad Incense Burner Made In Japan $12.50 Teenage Mutant Ninja Turtles Gengis Frog used good shapeTeenage Mutant Ninja Turtles Gengis Frog used good shape $15.00
Vintage De Nicola Frog Pin Green Beads Green Rhinestone GoldtoneVintage De Nicola Frog Pin Green Beads Green Rhinestone Goldtone $49.99 Pixar Pals Leap Frog Pad LeapPad 2 Leapster Explorer Science Game 4-7 YearsPixar Pals Leap Frog Pad LeapPad 2 Leapster Explorer Science Game 4-7 Years $10.00
Pre Wwii German 98K Mauser Bayo Frog-Original-Dated 1936Pre Wwii German 98K Mauser Bayo Frog-Original-Dated 1936 $80.62 Country Cousins Katie & Scooter Playing Leap FrogCountry Cousins Katie & Scooter Playing Leap Frog $8.00
Unique Vintage Frog Glazed Pottery Clay Figurine - Foot In Mouth- 4”HUnique Vintage Frog Glazed Pottery Clay Figurine - Foot In Mouth- 4”H $45.00 Booyah Bait Co Popping Pad Crasher Swamp Frog Yellow Byppc3900Booyah Bait Co Popping Pad Crasher Swamp Frog Yellow Byppc3900 $7.99
Folk Art Standing Handpainted Frog Holding NetFolk Art Standing Handpainted Frog Holding Net $4.00 Vtg. Assorted Ceramic Salt Or Pepper Shaker Apple, Donkey, Frog ReplacementVtg. Assorted Ceramic Salt Or Pepper Shaker Apple, Donkey, Frog Replacement $9.98
15pcs St. Patrick Shamrock Pot Gold Frog Flower Flatback Cabochon Resin15pcs St. Patrick Shamrock Pot Gold Frog Flower Flatback Cabochon Resin $2.95 ash-greninja ex xy133 psa 8.5ash-greninja ex xy133 psa 8.5 $37.00
Kitsch Green Big Mouth Ceramic Frog Soap Scrubber Sponge HolderKitsch Green Big Mouth Ceramic Frog Soap Scrubber Sponge Holder $8.99 New 14k Yellow Gold Mermaid Pendant 2.8gNew 14k Yellow Gold Mermaid Pendant 2.8g $23.00
New Kim Rogers Jewelry Set Pins Brooches Christmas Gift Frog Ladybugs DragonflyNew Kim Rogers Jewelry Set Pins Brooches Christmas Gift Frog Ladybugs Dragonfly $9.99 Antique Japanese Meiji Unglazed Stoneware Crab Flower FrogAntique Japanese Meiji Unglazed Stoneware Crab Flower Frog $49.99
Vintage Ceramic Mushroom Flower Vase Frog mushroomsVintage Ceramic Mushroom Flower Vase Frog mushrooms $4.75 McDonald's Happy Meal Build-A- Bear 2006 ~ Friendly Frog #7 ~ New In packageMcDonald's Happy Meal Build-A- Bear 2006 ~ Friendly Frog #7 ~ New In package $3.99
Lot 15 Disney Princess and the Frog Tiana Pin Back Buttons Holiday 2009Lot 15 Disney Princess and the Frog Tiana Pin Back Buttons Holiday 2009 $4.99 3pc Vintage Troll Doll Lot Trendmasters Plastic Frog Russ Caveman Skier3pc Vintage Troll Doll Lot Trendmasters Plastic Frog Russ Caveman Skier $17.50
Click to see more Frog items at www.ebay.com
Prices current as of last update, 03/07/21 4:35pm.

Home Contact Resources Exchange Links eBay