My dogs been loosing her hair pretty symmetrically for the last two months. She eats okay, doesn't drink or eat more. Is still active (will jump on the sofa and in the car with no help) and seems pretty much like a normal dog except for her hair loss. She's not as hyper as when she was a puppy, but I can't say she's lethargic. I took her to the vet who tested her for Hypothyroidism which came back within normal limits. On Thursday she will undergo a cortisol test to see if she has Cushing's. I just read that the lifespan of a dog that has been diagnosed with the disease is two years. Is this true? My dog is only 3 yrs old. And by many standards doesn't fit the stereo-typical bill for Cushing's. (I have been told that dogs can get it at any age and that it is fairly common). I feel she is too young to be euthanized and doesn't show enough discomfort to warrant it. Does anybody know how I can keep the standard of living up for my dog with Cushing's?