Giardia is a parasite that causes an infection known as giardiasis in the gastrointestinal tracts of dogs. It spreads when dogs ingest microscopic cysts — offspring of the parasite — found in the feces of infected animals.
This can cause severe gastrointestinal problems like vomiting and diarrhea. However, many infected dogs show no signs of giardiasis at all. If your dog shows
