Rough-skinned newts wander across our roads on wet days in the spring and occur in and around our pond throughout the summer. On one occasion, I found one walking the same route when it was covered in snow.
One of the few poisonous animals in Washington State, they contain tetrodotoxin, the same toxin found in fugu, a fish which, when prepared correctly, is a delicacy in Japan. (See Tetrodotoxin by Jim Johnson)
An article in the journal Nature described differences in the tetrodotoxin content of Rough-skinned newts in different locations. (See Nature abstract) More on Rough-skinned newts and their coevolution with garter snakes at the Berkeley web site Understanding Evolution.
Rough-skinned newts can be identified by the dark, bumpy back and the orange underside.