My Chloe is a different dog when she has her harness on. She is actually embarrassed by it. She wears a harness in the car attached to a seatbelt. If I ever take her out with her harness on and clip the leash to it....she looks mortified! Hates it! She is not happy, walks funny, etc.
So for us...the martingale is the perfect solution.
Oh my heavens..you should see Trapp with his harness is on.He acts as th
ough he has a foreign object that has landed on his body. Although he does walk better on a leash with it on,he is not a happy camper!!

Both those who love harnesses and those who don't. The shipping for that site is extra fast! You just attach the clasp to their collar/harness and then put the buckel into your regular seatbelt buckel holder.