Macaca mulatta
Cercopithecidae
Marmota monax
Sciuridae
Mephitis mephitis
Mephitidae
Mesocricetus auratus
Cricetidae
Microtus chrotorrhinus
Cricetidae
Microtus longicaudus
Cricetidae
Microtus ochrogaster
Cricetidae
Microtus pennsylvanicus
Cricetidae
Microtus pinetorum
Cricetidae
Mus musculus
Muridae
Mustela erminea
Mustelidae
Mustela frenata
Mustelidae
Myocastor coypus
Myocastoridae
Myodes gapperi
Cricetidae
Myotis grisescens
Vespertilionidae
Myotis keenii
Vespertilionidae
Myotis lucifugus
Vespertilionidae
Myotis sodalis
Vespertilionidae
Myotis velifer
Vespertilionidae
Napaeozapus insignis
Dipodidae