There are a lot of theories out there but no one really knows why some dogs eat poop. I have had one poop eater, and he got giardia from eating feral cat poop (before I realized what was going on). It is a good idea to discourage it just because you never know what nasties they might pick up, plus, eeuuw! You can try some of the remedies, they work for some dogs, none of them discouraged Fletcher. I do love hearing people say “it makes it taste bad” it makes the poop taste bad?