my mr. beefy is 1 1/2 years old, and he always acted like i was killing him when i put him in a harness, but hes litter box trained, and we live in CT, so most of the year its too cold to take him out much anyway. a few weeks ago i was getting ready to take my son for a walk, and i didn't even consider taking the dogs, since they usually don't want to go. but beefy actually went and got his harness and brought it to me, and since then he has been much better about putting it on. i think sometimes the more you try to make them do things your way, the more they feel like putting up a fight. you might do better to associate the harness with something good, with beefy i would always give him a treat and then take him outside as soon as he let me put it on. i didn't think it was working, but obviously, when he wanted to go outside, he knew to get the harness.