what dog can i buy? Need some help....

It all depends on what sort of dog (purebreed or not), do lots of research make sure that the dog will fit into your home/yard and also fit into your lifestyle, make sure you have time to spend with it - exercising, playing etc...

to be honest, if you think youre not going to pay attention to it as much, then i dont think you should get a pit bull. they are hyper and jump a lot. we have one and tried everything to train her and the way i see it, she is being trained the wrong way. i think german sheapard are the best. we got one when we were kids and never had problems and his dogs or puppies were the same, they never were hyper.