Knob-Skinned Western Newt

There are about 3,950 known species of newts in this family, all of which are indigenous to California, Nevada, Arizona, New Mexico, Utah, Oregon, Washington, Idaho, Colorado, and Texas. Unlike most other newt species, knob-skinned western newts never return to the water to become fully aquatic adults, so knob-skinned western newts remain on land for the rest of their lives after the complete metamorphosis from tadpole to newt. Many species of newts in this family feeds on insects, non-dangerous spiders, snails, slugs, centipedes, millipedes, and pillbugs.