Jeger

Young
Their physical body looked similarity to the realistic wolf except for its size which was twice the size as a normal wolf and their head were covered with bone head.

Old
When Jeger gets older, their size increased larger to the size compared to the half size of Goliath. It would get bone over its entire body.

Strength
Jegar moves quicker than the normal wolf and able to dodge any normal projectile. Its bite can puncture and slash any fresh of the living thing including Grimm. They can also lunge on their prey to kill. However, it gets killed easily when hunted alone despite their abilities and size and exposed itself when lunging. However, the pack can communicate a little and hunt their prey to pick one at the time but they were very disorganized.

When the leader, Older Jeger, is in the command of the pack, their communication became more stable as they can hunt easily as a group while following their leader's order. Its

Weakness
Young Jeger can be killed like a realistic wolf as it only had a bone head to protect its head.

Older Jeger cannot be killed easily as the bone plate was resistance to any bullets except the explosion that can knock it out or dust attack which can damage a little. However, its bone did not cover the entire body as there is small or medium size gape between the bone plate.

Trivia

 * Jeger translated to "Hunter " in Norwegian.
 * It loosely alluded to both realistic wolf and Fernier, the monstrous wolf of Norse mythology.