Heartworm Life Cycle at Life

Heartworm Life Cycle. Dogs contract heartworms when they are bitten by infected mosquitoes, not when they are given their annual round of preventative medicine. When the mosquito bites a cat, it deposits the infective larvae, which enter the.

A single adult heartworm can survive in a dog for five to seven years. The heartworms mature and eventually release. Once the larvae are inside of your dog or cat, they relocate to the right side of the heart and begin to reproduce rapidly.

Companion Animal Parasite Council Heartworm

Inside the mosquito into an infective stage within. When the mosquito bites a cat, it deposits the infective larvae, which enter the. The life cycle begins when a female mosquito bites an infected dog and. Adult male heartworms can grow to be 6 to 7 inches (15 to 18 cm) in length;