Question about my old boxer

[Dumi]

I have an 8 years female boxer, I`ve had her since I was a little kid and I really really adore here, I would suffer a major depression to wake up one day with her not being around, but lately, she`s really really thin, altough I give her more than enough food maybe. She won`t eat Pedigree or stuff like that, never did like those things. Could somebody assure me that she isn`t just purely dying? :(
Question 2 : I have a 8 months rottweiler. One thing about him is that he keeps destroying my yard, but I keep hoping that he`ll get a bit smarter by age, right? I shouldn`t worry about him being retarded, or something, right? I haven`t given him a proper education by somebody specialized yet, but he does respect me and he knows where his limits are? Should I have a fear that one day he could atack me? Or my boxer? Please help me. Thank you a lot

[fuzzdomestic]

Has your female been into the vet lately? You might want to get her a check-up to make sure she isn't sick or anything. 8 is the average lifespan for a Boxer, but that does include puppies that don't make it, so it is a little bit low. I'm guessing average for a healthy boxer is around 9-10 years.
As for the Rottie, I wouldn't think he's retarded, Rottweilers do need quite a bit of mental stimulation to stay happy. You might want to get him into some obedience classes. That way you can get some training in under the eye of an experienced instructor and socialize him with other dogs at the same time. They should be able to help you teach him not to destroy the yard the way he is.
I'm not sure why you think your dogs would attack you. Where did you get your dogs from? Bred properly, these are two of the most even-tempered breeds you can find.