I'd like to hear some opinions on why you should not free feed. I've had a very difficult time feeding Harley & taking her food away after 20 min. She's never anywhere close to being done. I understand that once she realizes it won't be available, she'll eat. I just wonder if it's necessary for a mellow/ laid back dog. She prefers to graze, and I'd be interested in hearing any reasons why I should not alllow it.