Full view of a large Koala sitting on a branch of an Australian native Gum tree

phascolarctidae koala koala bear australian eucalyptus tree tourist attraction tourism australia natural wildlife animal behaviour gum leaves treedwelling indigenous marsupial native sleeping animal cute habitat phascolarctos cinereus herbivorous iconic furry big ears no drink gulamany aboriginal gula nature bush land outback forest ranger national park countryside australian wildlife pouch feed claw 4k resolution field research eucalyptus trees native bushlands chlamydia sleep behaviour leathery nose