The Brief A FOX 11 viewer recorded rare footage of two male rattlesnakes engaging in a "combat dance" in Thousand Oaks. The California Poison Control System reports receiving nearly 250 rattlesnake bite calls and three fatalities in the first six months of the year, a number experts call unprecedented. Officials advise remaining calm around snakes, noting rattlesnakes are California's only venomous snake, and recommend removing nearby rodents to deter them. A video captured by a FOX 11 viewer showing two massive rattlesnakes in Thousand Oaks served as a reminder that as heat rises, so do rattlesnake sightings. The California Poison Control System reported receiving approximately 250 calls involving rattlesnake bites during the first six months of the year.