the dog(s) should get fixed. nless it was a purebred, and is for show or breeding purposes. have you thought about whats going to happen to the dog when u go to college? will u be the only one responsible for the dog? or is your mom willing to take care of him. we have so many students here, in our town, that go off to college, and they either dump their dogs, or no one cares for them. not saying, that you won't, but it's something to think about. when i was young, 19, i ahd a cockerspaniel puppy, and i was really irresponsible. i didnt go to college, but i also had a baby, so i ended up giving the puppy away. cus i didnt even think about the next 10-15 yrs ahead of me, with a dog....just a thought. i used to have a rottweiler(former showdog) and she desired so much attention, which i was able to provide, cus i am a stay at home mom. unfortunately she passed away. also consider hip problems with that kind of breed. and i am glad u are looking into getting a dog from a shelter, to save a life. Good Luck with whatever u decide to do.also, with the chihuahua..i hope u didnt just give him away because of peeing in the house, or barking a lot etc. i hope there was a real good reason for u to get rid of him. whereas i dont see ANY good reason to get rid of a dog. behaviour problems can be corrected, and health problems can be taken care of with proper vet care. u cant keep getting a dog, and then decide to say:screw it, i want another one....