One of ours loves PB the other doesn't.. it's funny. But since I personally eat No Salt peanut butter, that is the one I give them, but some of my dogs loved regular peanut butter too. I remember putting a pill in the paenut butter once so my dog would take it without spitting it out. I have never given more than a teaspoon because I think the little tongue just gets too tired after a few bites, so they just end up walking away from it *hehehe*