Bailey's Hip Problem

Now Bailey loves to eat, despite all of her food allergies, and she is a hefty girl. We know she is overweight and try to cut down on her treats and her food and make sure she is getting plenty of exercise. She loves to run and play with the terriers in the back yard, even when they get fussy, and occasionally nip at her for stumbling over them.
Last summer we went to Kansas to visit relatives and my cousin had what he called a "Goat Dog", that was 1/2 Greta Pyrenees and 1/2 Akbash. He said these dogs were used to protect livestock from coyotes. My brother had recently lost a whole herd of sheep to coyotes. My teenage nephew decided that they needed a "Goat Dog" so they could get more sheep. There was no detering him from this idea. We got back to the hotel and he got on my laptop and found some Great Pyrennnes/Kangul(Anatolian Shepherds) for sale in Oklahoma. So on out way back to Texas we stopped and picked up one of these huge puppies. It stayed at our house while he was small, until we felt he was sufficient size to defend himself from Coyotes. He got along fabulously with the other dogs. The problem was, he grew, and grew and then grew some more. He and Bailey would chase and then wrestle each other. The puppy would run and nip at her hocks. It wasn't long before we noticed Bailey was limping. A trip to the Vet and we learn Bailey has some slight turning out of one hip, that the vet thinks is from her being overweight. She recommends a diet, and some glucosamine tablets. She tells us to buy the people brand of glucosamine at Walmart and give Bailey 1000mg per day. We do that, and then I see some milled flaxseed at the grocery store. I had heard before that it was also good for joints, so I buy a box, and instruct my mother to mix a tablespoon into her food. Bad idea, as now we discover that Bailey is allergic to Flaxseed. I go over the ingredients of some of the dogfood that Bailey was sensitive to before and find Flaxseed listed as an ingredient. Mystery solved. We add Flaxseed to the list.