siberian tiger, panthera tigris altaica, yawning with a big open mouth, showing teeth and tounge. snow on the ground

altaica amurtiger animal barbs big bigcat bored boring camouflage captive cat coat dangerous declining endangered feline fur hunter keratin killer mammal markings mouth open panthera papillae power powerful rough sandpaper siberian sleepy snow species strong teeth threatened tiger tigris tired tounge vulnerable wide wildlife winter yawn yawning