The Amur Tiger, also known more commonly as the Siberian Tiger.
As you may know, these guys are endangered, though their numbers in the wild have stabilized due to intensive conservation, and captive breeding programs for this species are quite successful so far.
This fella was observed at the Denver Zoo.
Acrylic paint on board, 8" x 10"
Link
Litster25
Kinda thought this was a legit photo from the thumbnail lol beautiful work :)