There are different species of mammals uniquely found in Canada which includes the Gaspe shrew, Maritime shrew, Vancouver Island marmot, Ogilvie Mountains collared lemming, Richardson's collared lemming.

Also during the winter, Richardson's collared lemming mammal species often develops a large digging claws found on the front feet.

The collared LEMMING usually has a fairly regular 4-year population cycle but, in parts of the High Arctic, the population fluctuates irregularly.

The Richardson collared lemming mammal species are known to feed on green vegetation commonly grass during the summer, and when it comes to winter, it usually feeds on twigs.

The Richardson collared lemming species is native to tundra in the west Hudson Bay in the central north of Canada named after Sir John Richardson who is a Scottish naturalist who delved the Canadian Arctic.