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Amphibians - Bullfrogs

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Did you know... 

that the American Bullfrog [Lithobates catesbeianus – Rana catesbeiana] is the largest frog in North America and varies in colour from brown to green?  Its belly is creamy white.  It may have some dark mottling (spots) on its back or underside.  Adult males have pale or bright yellow chins during the breeding season.  

The circles near the eyes are called tympanic membranes and are the frog’s ear drums. This species is distinguished by the fact that the typani are always larger than the frog's eyes.  Bullfrogs have lateral folds, but unlike other species, these folds wrap downward around the tympani instead of running down the frog's back. Average body length is 4-5 inches.

Similar species - 

A Green Frog is similar to a Bullfrog, except that it is much smaller and it's dorsolateral fold runs down its back instead of downward.

American Bullfrog Clip Art
Note:  This is a png image with a clear background.

Medium - 267 x 235  Right click on above image and chose "save as".

Large - 682 x 600  -  For the full-size resolution of this image click here.

 

 

large american bullfrog in water

Large American Bullfrog - 25  Photographed in Northern Ontario.

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american bullfrog face in water

Large American Bullfrog - 24  Photographed in Northern Ontario.

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american bullfrog on beach

American Bullfrog - 12  Photographed in Northern Ontario.

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american bullfrog beside stick

American Bullfrog - 13  Photographed in Northern Ontario.

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american bullfrog in water

American Bullfrog - 14  Photographed in Northern Ontario.

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american bullfrog on lily pad

American Bullfrog on lily pad - 15  Photographed in Northern Ontario.

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american bullfrog floating on lily pad

American Bullfrog on lily pad  - 16  Photographed in Northern Ontario.

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small american bullfrog holding reed in water

Small American Bullfrog just hanging around holding a reed - 18  Photographed in Northern Ontario.

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Large - 3131 x 2349 - Now only available upon request.

 

 

american bullfrog holding grass in water

Small American Bullfrog holding onto a reed  - 19  
Photographed in Northern Ontario.

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child holding large bullfrog ontario

Bullfrog - 12  Photographed in Northern Ontario.

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large green bullfrog on man's hand

Bullfrog - 13  Photographed in Northern Ontario.

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man holding large bullfrog

Bullfrog - 14  Photographed in Northern Ontario.

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man holding large bullfrog

Bullfrog - 15  Photographed in Northern Ontario.

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man holding very green large bullfrog ontario

Bullfrog - 16  Photographed in Northern Ontario.

Medium - 640 x 480  Right click on above image and chose "save as".

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large male green bullfrog

Bullfrog - 17  Photographed in Northern Ontario.

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male green american bullfrog

Bullfrog - 18  Photographed in Northern Ontario.

Medium - 640 x 480  Right click on above image and chose "save as".

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man holding american bullfrog legs

Bullfrog - 19  Photographed in Northern Ontario.

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hind leg of large american bullfrog

Bullfrog - 20  Photographed in Northern Ontario.

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Bullfrog Image Pages  [1]   [2]   [3]

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Amphibian 
Fun Facts

 

- Amphibians are divided into three groups:  Newts & Salamanders; Frogs & Toads; and Caecilians.

 

 

- Caecilians are amphibians that don't have arms or legs.  They look like snakes or worms.

- There are 5,000 - 6,000 amphibians species known today.

 

 

- The term "amphibian" means "two-lives" - one in the water and one on land.

 

 

 

 

- More than 75% of all toad and frog species in the world live in tropical rainforests.

 

 

- Toads have dry, bumpy skin while frogs have smooth, clammy skin.

 

 

- The life cycle of an amphibians involves three stages:  egg, larva and adult.

 

 

 



- Frogs breath with their lungs AND through their skin.



 

- Frogs can see forwards, sideways and upwards - all at the same time!

 

 

- According to the IUCN (International Union for Conservation of Nature), nearly one-third of all amphibians are known to be threatened or extinct!

 

 

 

 

 

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