Not all male dogs lift their legs to pee so it really isn't an indication of age, as far as thinking he was younger than you were told. Cracker is 3-1/2 and still doesn't lift his leg to pee, although he never squatted either, he has always done a manly lean foreward and then just pees LOL. Sometimes you can't even tell unless you look, if he's going.

Congrats on growing up Archie!