Just use all natural pb, no sugar or salt added. Just peanuts. Lola loves it. We eat the all natural too, tho it does separate and the oil rises. We leave the jar upside down in the fridge.
Have used it for many years on 4 different bullies no issues..... freeze it in the toy/bone, makes it even better :D make sure you do not buy any that have artificial sugars.... natural PB or regular sugar only