The bullfrog
is one of the largest “true” frogs, with a body length between
three and eight inches, with back legs seven to ten inches long. They are
usually green to greenish brown. They do not have the two parallel lines
of raised glandular skin between the back and sides that are often found
on similar frog species such as the Green frog or the Bronze frog. They have
a ridge (dorsolateral fold) that starts behind the eyes and sweeps back and
down around the ears. Their ears (tympanic membranes) are quite large.
The bullfrog
is nocturnal, and a voracious hunter. Large specimens prey upon small birds,
young snakes, crayfish, other frogs, and minnows. The frog has been introduced
into many areas outside its natural range. Possibly by people interested
in commercially harvesting frogs' legs.
