Half Brother

I loved this book so much and I think that everyone in the class should read it at one point or another. Its about a boy named Ben. His parents one day brings home a baby chimp. They name him  Zan. They then start teaching Zan sign language when he is two months old. Ben goes through a pretty normal life with things at school homework and girls. Ben then becomes to really like Zan and Zan really likes Ben. Then Ben has to make the decision of beliving what he belives is true or what he is being told to keep Zan from a horrible fate.