I've got an adult female beaver my dad had mounted when he trapped for the state about 45 years ago and each tooth is about right at 1/2"...each, about 1-1/16" across both. Bottom teeth are about 3/4" wide across both.. Maybe just a big-azz beaver but I would have guessed Muskrat at slightly less than 1/4" a tooth.
EDIT: Beaver teeth width range from .53" to 1.57", most commonly, adults of 2 years average 1.15-1.2" per North American Trappers Journal..

Last edited by Snipe; 01/04/21 12:13 AM.