Giardia lamblia

Giardia lamblia
Giardia cell, SEM
Scientific classification
Domain:	Eukaryota
Phylum:	Metamonada
Order:	Diplomonadida
Family:	Hexamitidae
Binomial name
Giardia lamblia

Parasite life cycle (click to enlarge).

Giardia lamblia (also known as Lamblia intestinalis and Giardia duodenalis) is a parasite that infects the intestines and causes giardiasis or 'beaver fever'. Giardia affects humans, cats, dogs and birds, cows, beavers, deer, and sheep.