Why Boxer dog's die young

Homecloned, Chase looks like a pit bull to me. I have three pits. One female, 4 yrs old yesterday, and two males, 3 and 2. Not boxers, but also great dogs with a VERY undeserved reputation. They are great pets.

It depends on how he's standing. If he's lying down sometimes but when he is standing alert he defenitly looks boxer. His spots make him look like a dalmation. lol. He is 100% boxer going back a couple gens.
I have heard pit bulls can be loving dogs and knew people with them growing up. But I did see some bad fights with them also.

Chase is adapting very well. He has not had an accident since day 3 and loves his new home. He follows me or Mary all over and has even shown sign of protection when he hears odd noises. Man I love this dog!