We tried both sides, many, many times. We tried just the needle, we tried a regular syringe. Frequently, the vet would get the needle in, and Betsy would throw herself against whatever structure or person was within range and try to knock the needle out. It's very hard to just wander over and do anything to an animal that rears and swings it butt at you as you approach it. Betsy has the world's worst case of 'white coat syndrome' - she knows why the vet's there, and wants no part of it. Betsy's little freak out only ends when the needle comes out. She won't be distracted, she won't be bought off; a twitch really only works as another "handle." I hate putting her through this, but she can't travel without a current Coggins, and we have the fair coming up. Betsy has been to the fair for the last 10 years, and a lot of folks would really miss her if I didn't take her. And too, The Mule's sense of adventure makes the fair a fun experience for her, too - at least some of the time.