Giardia is a tiny parasite that lives in the intestines. It can infect humans, mammals, and birds. Giardia infection, known as giardiasis, causes diarrhea in your dog. It's important to know that you ...

Along with ticks, fleas and heartworm, there’s another parasitic organism that can cause a host of problems for dogs. Giardia (also known as giardiasis) is an intestinal infection caused by a parasite ...