Man, my poor puppy was so sick off these Green chewables the other day. I tried to give it to her and she turned up her nose to it. I should have taken her advice because she's a corgi (and thus knows everything), but I put some peanut butter on it and coaxed her to chew it.
She worked on it during the course of the day, and by the end she was having soft poops of a vibrant green. She was very unhappy, as was I at having to wipe green poop off of her stubby butt.
NEVAR AGAIN.