For example, tree frogs are alive and well in many parts of California where red- and yellow-legged frogs have vanished in California.

A Sierra Nevada yellow-legged frog.

The yellow-legged frogs hibernate beneath the ice for eight months of the year.

Rana muscosa (mountain yellow-legged frog)

This population once included several species of frogs and salamanders; the foothill yellow-legged frog and western spadefoot are listed as endangered species.

The foothill yellow-legged frog has a grey, brown, or reddish dorsum, or the back of the frog.

The foothill yellow-legged frog is a natural prey of diving beetles, water bugs, garter snakes, rough-skinned newts, bullfrogs, and western toads.

Three species, the red-legged frog, the foothill yellow-legged frog and the great basin spadefoot, were not found at any of the original or new sites searched.

The Sierra mountain yellow-legged frog is threatened and the southern mountain yellow-legged frog is endangered.

The foothill yellow-legged frog has been found in the western portion of the Red Hills in the Andrews Creek drainage.