Heene, H. 1979 24 April 100 m E of St. Pinolo Regional Park, Richmond, Contra Costa Co., California 6:30 PM. Found juvenile (<.5m) Pituophis under piece of folded carpet at edge of road paralleling the tracks - same place I found (this?) juvenile 24/March. It was calm when placed in the road, but became aggressive when approached by Jayla (Malamute). S-coil, hissing, striking, and tail vibrating. She approached closely, laning, it struck, she jumped back. This was repeated several times but she never seized it and I returned it to the carpet. Also 2 ad Pituophis under one of the corrugated sheets, partly overlapping each other at one corner. The lower a dark one with bobbed tail just past the vent (?); the upper a very red ? w/ some irregular, large scars (?) dorsolaterally. They were very quiet and barely moved when touched. 2 Bufo boreas under another sheet. Many red-winged blackbirds singing.