When it comes to Chimps and Gorillas there are a lot of similarities between them and humans. Numerous studies on blood types, showed Chimpanzees have the blood type A and a very small amount of O, and they never have blood type B. Several studies indicated Gorillas have the blood type B and a very small amount of O, and never type A. Interesting enough, blood type AB is not found in either Gorillas or Chimpanzees. But types A, B, O and AB are readily found in human beings. Regardless of the fact there is a smaller amount of O present in both Chimps and Gorillas, I still find it interesting that O does exist with them. I also find it interesting that two human blood type A’s can give rise to an O, two human blood type B’s can give rise to an O, and that two human blood type O’s can ONLY make O.