Jägerbar

A Jägerbar (pronunciation: YAY-gər-bar; Germ. Jäger "hunter" + Bär "bear") is a bear-like creatures based on the the Three Bears. Nick Burkhardt confronted a family of Jägerbars shortly after learning of his duties as a Grimm.

A couple invaded the home of a Jägerbar family and slept in the owners' bed. The two were then captured, attacked and brought to a cave by the son of the owners and two of his friends, who were also Jägerbars. They attempted to sacrifice them. Nick however saved the lovers with the assistance of the father of the one Jägerbar.

Jägerbar are quite strong creatures, able to casually over power a grown man, although they are weaker than Grimms, as Nick was able to defeat two, with simple punches and kicks, they are also shown to be more resilient than humans, as one was able to survive falling into a spiked pit, granted gaining presumably fatal/irreparable injuries

They appear to be sexually dimorphic seeing that Diane Rabe's Jagerbar form looked almost exactly a regular bear while Frank and Barry Rabe's Jagerbar froms were much more humanoid.

Aunt Marie's Book
An entry in Marie Kessler's book reads thus: Jägerbars are bear-like creatures that date back to 900 AD. They use a rare Germanic weapon with a carved bear head and a claw-like scoop to disembowel their victims. This weapon is used during Roh-hatz, a coming-of-age celebration of a young Jägerbar from boy to man. Jägerbars can live safely in society as long as they stay away from alcohol. Most Jägerbars are politicians and mortgage lenders.