A frog is any member of a diverse and largely carnivorous group of short-bodied, tailless amphibians composing the order Anura.
In general, frogs have protruding eyes, no tail, and strong, webbed hind feet that are adapted for leaping and swimming.
They also possess smooth, moist skins. Many are predominantly aquatic, but some live on land, in burrows, or in trees.
Frog Facts
Frogs were used to show that nerve impulses affect the heart using chemical transmission - 1st evidence for neurotransmission
Frog studies found that acetylcholine is responsible for relaying nerve impulses to signal movement to muscles
Frogs are useful to study development, particularly early evens such as the formation of the neural plate
Transparent frogs are a great model for studying physiology
The neurophysiology of vision was partly studied in frogs
Studies on frogs were crucial for cloning and stem cell research
Not all frogs can jump, some have legs that are too short and walk
Frogs can see all around them but can only see moving things
A frog's bulgy eyeballs will close and move down into its head when it swallows as the eyeballs push the food down its throat
Species
American bullfrog
Common toad
Green and golden bell frog
Northern leopard frog
Golden poison frog
Lithobares clamitans
Wood frog
Pool frog
Habitat
Frogs thrive in a large number of environments from tropical forests to frozen tundras to deserts. Their skin requires freshwater, so most frogs live in aquatic and swampy habitats.
Common frogs can be found anywhere that is damp enough and has a pond or other body of water nearby.
Gardens are a key habitat, but regular sightings reported for the RSPB's garden wildlife survey fell by 17% between 2014 and 2018.
