This is a Siberian Tiger (Panthera tigris altaica); a.k.a. Amur Tiger and, apparently, he needs a nap.
This species is the largest of the predatory cats; males can exceed 11 feet in length measured from skull to tip of tail. Females are smaller. Males can weigh 700 pounds (320kg) with females being a bit smaller and averaging 400 pounds (180kg).
They have some serious dentures and they could hurt you. Their normal prey is larger quadrapeds like elk and deer and a significant proportion of wild boar.
Obviously, they are found in Russia, Northern China and possibly North Korea. Their territory was once much larger. This one resides in the Milwaukee zoo with his wife and three children. All.....so beautiful.
Best in Large.