The Malayan green whipsnake is diurnal and mildly venomous. The most significant threat to the Alameda whipsnake is human impact. Little population abundance data exists for the Alameda whipsnake. It is closely related to the California whipsnake ("Masticophis lateralis"). In winter months, the Alameda whipsnake hibernates in rock crevices and rodent burrows. It is a chief remaining refuge for the threatened Alameda whipsnake, California red-legged frog. Two more reptiles, Caspian whipsnake and "Coluber spinalis", are extremely rare. The Caspian whipsnake feeds on small vertebrates. The biggest threat to the Alameda Whipsnake is human development in the snake's habitat. The Alameda whipsnake is non-migratory, so distribution is not large. The Caspian whipsnake is perhaps the largest species of snake in Europe. Aside from human impact, the Alameda whipsnake must avoid its predators. The California whipsnake is found in California's northern and coastal chaparral. The striped whipsnake is found throughout the western United States and northern Mexico. Dolichophis jugularis, the black whipsnake, is a species of snake in the family Colubridae.