Behavior
The Californian Kingsnake is generally diurnal, but they become more nocturnal if the weather is too hot. In the winter, they will usually go deep underground and enter a hibernation-like state called brumation, which is characterized by a slowed metabolism and reduced activity.
California Kingsnakes are opportunistic feeders, feeding on almost any vertebrate they can overpower. Common food items include rodents, other reptiles, birds, and amphibians. All kingsnakes are non-venomous, but are powerful constrictors and generally kill their prey through suffocation. The "king" in their name refers to their propensity to hunt and consume other snakes, including venomous rattlesnakes. California Kingsnakes are naturally impervious to the venom of rattlesnakes but are not totally immune. They feed on rattlesnakes when the opportunity arises and a rattlesnake will make an easy meal for a hungry kingsnake, but do not seek out rattlesnakes specifically, nor consume them on a regular basis. Rattlesnakes and California Kingsnakes are not enemies, and may be found sharing the same piece of cover (i.e. plywood, tin, rocks, crevice, etc.) in the wild while completely ignoring the presence of the other.
When disturbed, California Kingsnakes will often coil their bodies to hide their heads, hiss, and rattle their tails, which, if done in dry vegetation, can produce a sound somewhat resembling that of a rattlesnake's rattle. They are considered harmless to humans, but if handled it is common for this species to bite as well as excrete musk and fecal contents from their cloaca, but this latter habit is usually restricted to the females.
Kingsnakes usually shed four to six times per year at which point they go "opaque", meaning the snake's skin becomes dull and its eyes will turn a milky color. Like all snakes, they usually shed in one long piece, which includes their eye scales. Juvenile snakes will shed more frequently, up to once a month, than adult snakes because of their faster rate of growth. Prior to shedding, they will generally seek out humid microclimates in their habitat.
Read more about this topic: California Kingsnake
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