Try telling that to my boy Monty. Yesterday he got into the studio while I was gone and ate a piece of magenta pre felt. While I admire his color choice, things did not go well. I will spare you the details, but he did seem to be getting rid of the excess fiber and I thought all was well until 1:00 am when I woke to the sounds of one very distressed pup. So of course we wound up in the doggie emergency hospital. They fixed him up, I paid the bill, and this morning he is a more subdued version of himself, but recovering nicely. Do dogs, at least smart little poodles, get cause and effect? His breeder thinks he should, but I wouldn't bet a $$$$$$ trip to the emergency hospital on it!