Merycoidodontoidea, sometimes called "oreodonts" or "ruminating hogs", is an extinct superfamily of prehistoric cud-chewing artiodactyls with short faces and fang-like canine teeth. They lived during the Late Eocene to Early Oligocene periods. 
Museum grade replica by paleontologist Jerry Jacene.
5.75 inches long by 4.25 inches wide. 
1 lb .8 oz