- about 2-3 lbs, the size of a large guinea pig
- herbivorus rodent, dental formula 1-0-1-3/1-0-1-3
- Large "beaver-like" incisors are used to cut vegetation and nibble trees to get to the inner layers of bark.
- Fairly common on or in dry brushy hillsides, but mountain beavers are rarely seen because by day they stay in underground burrows that are dug with sharp front claws.
- Look for burrows and especially inspect openings for wear that indicates that a mountain beaver is home.
- Mountain Beavers' extensive tunnel systems have many openings to the outside and include chambers for sleeping, food storage, and a bathroom.
- They venture out at night to eat and gather vegetation that they store in burrows or stack near their burrow openings for drying.
- Despite the name, mountain beavers are not closely related to American Beavers and do not chop trees down.