From:
Giardia canis in Dogs
What are the signs of a
Giardia infection? Most infections with
Giardia are
asymptomatic. In the rare cases in which disease occurs, younger animals are usually affected, and the usual sign is diarrhea. The diarrhea may be
acute, intermittent, or
chronic. Usually the infected animals will not lose their appetite, but they may lose weight. The feces are often abnormal, being pale, having a bad odor, and appearing greasy. In the intestine,
Giardia prevents proper absorption of
nutrients, damages the delicate intestinal lining, and interferes with digestion.