High Quality Content by WIKIPEDIA articles! This is a list of the mammal species recorded in Canada. There are approximatively 200 mammal species native to Canada. Its large territorial size and variety of ecosystems, ranging from mountains to plains to urban housing, mean that Canada can harbour a great variety of species, including nearly half of the known cetaceans. The most well-represented order is that of the rodents, and the smallest that of the Didelphimorphia (common opossums).