So recently a horse at our barn had to be put down (i have a thread about salmonella poisoning) with out the owner's consent. Both the vet and barn owner tried to get in contact with the owner of the horse to see what she wanted done with the horse (whether to transport her to a vet hospital or put her to sleep). Needless to say after several attempts to contact the owner at home, on their cell, and at work both the vet and barn owner decided it was best to put the horse to sleep.
My question is, if the owner wanted to, could there be any legal issues? If not what law protects vets/barn owners?