Will Falconer, DVM Moderator
Who requires it, Hanna? The breeder? I submit they have no right to make decisions that affect the long term health of YOUR dog like this. If they're afraid you're going to raise puppies and compete with them (likely the reason, right?) and they, from their side, pester you further, I'd offer to sign an agreement that you'll do no such thing.
Otherwise, again, I'd carry on and ignore requirements from someone who sold you a dog to raise on your own. You alone have to live with the consequences of the health care choices you make. The breeder will not take responsibility for ill effects of decisions they impugn you to make.