His Signature Expression
This tattoo is almost identical to the reference photo. The artist just took some liberties with the color of the ball in the dog’s mouth. A yellow tennis ball is just more identifiable. Plus, the orange wouldn’t stand out as well against the color of the dog’s tongue.
Pet portraits are hard to do, but this tattoo artist managed to do a pretty good job. The dog’s paws weren’t even in the reference photo. Good job sketching those in.