Korean tree squirrel popping its head out of the tree hole and biting rind to broaden the hole size, getting out from nest in Yangjae Forest, South Korea

tree squirrel sciurus vulgaris sciurus squirrel nest bark tree trunk rodent hole mammal animal behavior wildlife vulgaris animal head out fir head wood get nose gnaw wild out of eyes nature bite closeup come pop behavior forest cute horizontal thicken close up home widen south korea claws grey autumn expand house rind broaden korean jump yangjae