Rattlesnake bites are common in our area of California. Dogs and cats are usually bitten in the face and front legs.
How it affects a pet: Envenomation can cause metabolic changes that can affect the body. The venom can also have an anticoagulant effect on pets.
Symptoms: puncture wounds and bleeding from those wounds, swelling, weakness or collapse, paralysis, shaking or twitching, dilated pupils, vomiting, bloody urine.
Sources: Pet Web MD