Yao Guai

Yao guai are a species of mutated black bears. These creatures are found in the Capital Wasteland and Zion Canyon.

Characteristics
Although generally found alone, yao guai exhibit a gentle, familial bond toward one another when found together, provided they do not feel threatened by the observer's presence. Yao guai will attack nearly any other animals or people they encounter, including deathclaws. However, yao guai have been known to be occasionally friendly towards bloatflies. There are tamed yao guai which can be seen following and protecting their masters in the Capital Wasteland. Yao Guai are very dangerous and attack quickly.

Yao guai
An adult yao guai.

Scavengers' yao guai
A tamed variant of yao guai owned by scavengers, most likely for protection and companionship.

Ruzka
A unique yao guai found in Point Lookout

Yao guai cub
A younger specimen of the mutant bear.

Giant yao guai
Larger versions of yao guai.

Ghost of She
A unique and mythical yao guai which can be found in Zion Canyon. It has a flaming body and a giant size, and can create several doppelgangers of itself.

Behind the scenes

 * In Chinese, yao guai (妖怪) simply means "monster". In Chinese mythology, "yao guai" are physical manifestations of the spirits of mistreated animals, or fallen divine animals.

Bugs

 * If you kill a Yao Guai when it rushes towards you, it is possible the body will fly away.

Gallery
http://swordfish95.gamerdna.com/images/fxO1zIQC/yao-guai