What Flair is going thorough is very common for her age. When horses reach 15 years of age their joints stiffen up, their back sways, their muscles disappear, their bones become prominent, their abdomen will sag, and their digestive system is not as good as it used to be.

Weight loss is not always a sign of illness, it's a sign of malnutrition. Flair's hips do not stick out because she was bred, it is because she is loosing the muscle tone in her croup, point of croup, and flank region- making her bones more visible.

You should consider placing Flair on a senior diet if she isn't on one already. Keep in mind when you switch a horse's diet you have to do it slowly and gradually to avoid health complications due to sudden change in their diet. Barley is also very fattening. Vegetable oil can also be added to senior horses' feed to add calories. Flair maybe missing some of her teeth, making it hard for her to chew- which is common in senior horses. Before you make any changes in a horse’s diet, talk to the vet to make sure it's a correct choice that will benefit the horse.

Flair is a cutie.

Please follow the link to get some good senior horse information: http://horses.about.com/care/senior/