DH's family have always had labs. They say that labs have no sense of portion control and their puppies often eat until they're sick. One of their dogs ate an entire loaf of bread and was visibly so fat it couldn't move until it was digested. All of it is strange to me because I swear my dog is slightly anorexic.
Anyways- what about the slow pet feeders and 4 smaller meals a day?
http://www.amazon.com/Loving-Pets-Stopper-Feeding-Supplies/dp/B00176BICU/ref=sr_1_3?ie=UTF8&qid=1439237043&sr=8-3&keywords=dog+slow+feeder