My 6 year old boxer Nitro is sickly! Was my father in law's dog until he passed on last summer. I got Nitro, and been caring for him since then. A beautiful and well behaved white boxer, Nitro has been a fine and trouble free friend. I noticed a couple weeks ago that he was not quite himself. Drinks a lot, pee's alot, not much appetite or energy. At first, I thought it might be the heat, and the boredom of having to stay inside most of the day to avoid the heat. Later last week, started eating less and less, and getting lethargic and losing weight! I began to suspect he might be diabetic. Ran him to the animal hospital and had him checked out. Not diabetic, but they sent off a blood sample suspecting he may have hyperparathyroidism, because of some chemical imbalances he had. Got the test results back today, not hyperparathyroidism! Might be lymphoma(cancer) causing his problems! Don't know for sure, have to take him in again Monday for more tests and get him checked for cancer! Man! This is bad, about to cry right now. I've had bad dogs and good dogs, but am really attached to this dog. Don't know what to think! Saying my prayers to St Francis of Assisi and crossing my fingers for a good outcome to this deal.