Are potatoes good or bad for cats and dogs? I read somewhere, potatoes are bad because they are in the nightshade family and can cause toxicity and intestinal upset... is that true?
I ask because, I have noticed many "grain free" pet foods include potatoes... a substitute for the grains? An inexpensive filler?
If potatoes are not bad, are they of any nutritional value for cats and dogs or just fillers? Would the type (i.e. russet) of potato make a difference?