Diesel is 26 months old and he lifts his leg sometimes - always when we're on walks - but in the yard he usually just kind of leans forward, bends his knees, and pees from all fours. I'm sure it's easier, and he's a big sleepyhead practically all the time, so when he gets up to go outside, he's groggy and lazy.
Oops, almost forgot one time he's sure to lift his leg. If he's being a dimtwit and peeing in the house somewhere!!! Like on my friend's couch (who I'm sure regrets saying yes, we'll babysit Diesel when you go to Vegas!)!