I'm trying to deter my dog from eating his own feces. I've heard that adding spinach or pineapple or pumpkin to his diet can help contain the problem, preventing this act by making the poop unappealing.
Is this true, and is there scientific evidence to back it up, or is it only anecdotal?
If this is true, how much of any should be used? I'm assuming the amount varies based on dog weight, but I want a guideline.
Does canned or fresh work better? I assume canned for pumpkin, but I don't know about pineapple.
For pineapple, should I just add juice, chunks, or both?
For spinach (suggested from the comments below), should I use fresh spinach or frozen (obviously not creamed)? Should I cook it first?