Cryptosporidium muris is a species of coccidium, first isolated from the gastric glands of the common mouse.

Cryptosporidium muris infects dogs, rabbits, lambs, cats, humans, and non-human primates.

[citation needed] The current diagnostics for Cryptosporidium muris are Polymerase Chain Reaction (PCR), Restriction Fragment Length Polymorphism (RFLP), and DNA sequencing.

Cryptosporidium muris is resistant to disinfectants; it has been discovered that ultraviolet or UV light helps to kill the species.

[4] Cryptosporidium muris has prevalence in the following species in the following amount: Dairy Cows -68% Feedlot Cows- 80% Mice- 26%, and Rats- 5%.