Our vet said the same thing Leslie (AdoreMyDogs) said in an earlier post--that if you neuter before about 9 months old, most males won't lift their leg. It's been true of Eli for sure. He was neutered at 7 months and now, at 1.5 years old, he still squats. He's never lifted his leg! He doesn't really "mark" either--just empties himself all at once rather than spraying a little bit every few steps. His way is kind of nice, if you ask me! I always wonder, though, if he gets "teased" by his dogpark friends at all...