I never let the technicians at the vet take my dog back. When I have had to have a dog x-rayed, they have me put on the vest and I help hold and position the dog. I hold my dog around the neck when they draw blood. My last dog had to be muzzled at the vet, but you have to be able to manage him and that comes through obedience. I am a big believer in trimming your own dog's nails. IMO, if you can't do that, you most likely can't manage your dog.