Siberian Tiger Panthera tigris altaica Felidae SITI PANTIG Mammal Big Cat adult rare Threatened fur coat Asia beast beautiful beauty danger dangerous endangered feline predator hunter striped stripes whiskers wild wildcat wildlife action aggression aggressive amur amurtiger carnivore cat close-up hunt captive jungle expression Tajga taiga tundra meadow grassland grass flowers blooming blossom walking walk relaxed landscape calm Siberia Russia June summer hunting pasture