The baritone call of the bullfrog is so deep and resonant ... Even the tadpoles of this species can reach 6.75 inches in length. They are among the most wide-ranging of all North American ...

Conservation gets complicated when a native U.S. species is appreciated in one part of the country, but despised in another.

THREATS: Destruction of vegetative habitat by livestock, conversion of natural springs, pools, and wetlands to stock tanks, and introduction of exotic species to cattle stock tanks are hurting the ...

The frog is also threatened by introduced species: Bullfrogs and green frogs compete with Oregon spotted frogs for food, while fish introduced for sport fishing may also compete for prey — or prey on ...