The creature in question is the arctic ground squirrel, Spermophilus parryii.
From the newscientist.com
T. Stevenson et al., took this research one step further and discussed work with an extreme hibernator, the arctic ground squirrel.
From the scienceblogs.com
Researchers hope that their study of the arctic ground squirrel will help them understand the human brain's potential more fully.
From the blogs.psychcentral.com
The fruit was stored by an arctic ground squirrel in its burrow on the tundra of northeastern Siberia and lay permanently frozen until excavated by scientists a few years ago.