Thanks for all the info, yall. I went back to the petstore, cause I felt bad for leaving his brother there by himself and got him too. He's black with white on his face. His fur is different and he feels a little fatter and is a little bigger than Sullivan. My friend Cory named him Milton, which is cool cause it's my GGrandpa's name. So now I have Milton and Sullivan. They are so cute. They get to playing and running around the cage and they do little kicks and jumps and shake their heads. It's PRECIOUS!!! Will boys fight when they are older, even if they are littermates and raised together? I read this on a couple of websites, and I'm worried. What's the best guinea pig food? I bought L&M food cause it's all they had at the petstore. Its made with alfalfa, which I've read can cause problems. I found some made with timothy hay at another petstore, but I'm gonna use up the other food first before I buy it. How can I supplement their diet with Vit C? I've read some things on the net, but would rather have feedback from people on here who own guinea pigs, because I trust yall more. I'm supplying them with fresh timothy hay. Any input will be greatly appreciated. I'll try to put pics up of them sometime today. Thanks in advance.