Giardia is one of them. Giardia in cats starts in the intestine but ultimately, it spreads through poop. It could be poop in a litter box that spreads over to another pet (or even a human ...

Cats in hats ... got rid of the Giardia in her system, but what is it? PetMD describes Giardiasis as a single-celled "protozoan" orally ingested through contaminated water, stool, or soil and ...