I can't claim to know too much about Virginia dear, but he's got a well-developed midsection and with that Roman nose I'd say he's every bit of five years. Good luck with him.
I bounced between 3.5-5.5 but I'll put my estimate on 4.5. He's got a wedge face, a neck that is filled out and merges into his brisket, signs of front shoulder definition (a hump), a definite pot belly, and a showing of a sway in the back, legs that are in proportion to his body.