In many cases, yes, female dogs are more likely to cause urine burn. But it's not about gender, it's about how the dog pees.  Dogs that squat when they pee release a high concentration of urine in one location, which hurts grass more than when dogs lift their leg to pee and only release a little bit at a time.  Female dogs are the most likely to squat, but puppies, elderly dogs, and some young adult male dogs also squat to go to the bathroom.