California Toad in My Backyard Posted on March 19, 2013 by Jungle Jenny ADULT CALIFORNIA TOAD Anaxyrus boreas halophilus Grows to 2-5 Inches From Snout To Vent Diurnal and Nocturnal. Reproduction is Aquatic. Fertilization is External. SEEN in my backyard in Sonoma County on March 19, 2013. *** This toad is not on the Special Animals List.