Big Country, if little Weaver plans on shooting a giraffe with his bow he had better up his poundage. The skin alone on a giraffe is 1" thick. Killing one with an arrow is a far cry from killing one with a gun. A broadside shot is likely NOT going to do it. Take the time to look over the skeletal system on a giraffe. The ribs are huge, and they will cover the majority of the vitals. Your best option for a vital shot is a frontal shot, from about 10' feet off the ground.