Dr. Rozanski recommends you check your pet for ticks once a day and after walks. “Ticks can be harder to find on thicker coat dogs,” she warns. “And dogs are often more affected than cats are.” What should you do if you find a tick? Look through the ASPCA’s guide: How to Remove a Tick from Your Pet. Once it’s removed, “try to save it in an airtight container,” suggests Dr. Rozanski. “Then ask your vet if you should bring it in for testing.” Ticks carry a number of diseases, including Lyme disease, but symptoms are often hard to spot. Dogs may be tired or feverish, or become lame.