Menu YOU, YOUR PETS, AND PARASITES Your pet is your friend and companion. The parasites that might infect them, however, are most definitely not. It is fairly common for your dog or cat to get a parasite (or two or three) at one point in their lives. And as a pet owner, it’s up to you to be informed about what can infect, and possibly harm, your pets. Test your parasite knowledge below. SHARE: MERCK ANIMAL HEALTH Learn more about Merck Animal Health and our dedication to preserving and improving the health, well-being and performance of animals through science. Copyright. © 2009-2017 Merck Sharp & Dohme Corp., a subsidiary of Merck & Co., Inc. All rights reserved. Forward-Looking Statement Privacy Terms of Use Site Map