I have three male chihuahuas they're all fixed. My mom didn't want them lifting there legs in the house so we got the oldest one Harley(2yrs5mos)fixed at 4 months. The othe Lola Star and Bruiser(2yrs on may 21st) were fixed at around 5 months. The vet said if we fixed them rite away they wouldn't lift there legs. Harley has never ever lifted his leg anywhere. He squats to pee. Bruiser and Star lift there legs and squat. Soo... Idk if getting them fixed has anything to do with it.