The vet comment pissed me off. It's complete bullshit, because no vet would condone putting that much weight on the back of a horse. In vet tech school we were taught that the total weight the horse can carry (including all the tack) should be no more than 15-20% of the animal's weight. And I think the thing that pisses me off the most is that if that poor horse was to injure itself while carrying that pig, it would probably be put down.