SF Peninsula Vertebrates - symbiote
Probably a red-legged frog.  Non-native bullfrogs have virtually displaced rlfs from California ponds.  They're not common any more.  Sigh.  This one from a little pond near Long Ridge OSP.

Probably a red-legged frog. Non-native bullfrogs have virtually displaced rlfs from California ponds. They're not common any more. Sigh. This one from a little pond near Long Ridge OSP.