a close-up of a koala clinging to a tree trunk, its fur is a soft grey, and its large eyes stare curiously at the camera

koala animal wildlife marsupial mammal furry cute adorable nature tree branch forest green leaves wild zoo australia eucalyptus sleep sleepy climbing hug grip arboreal endangered conservation closeup portrait curious looking fauna bush gum gumtree outdoors habitat close-up clinging trunk fur soft grey large eyes stare curiously camera