The Giraffe is a Kosher animal. It has a split hoof and a stomach system that has the animal chewing cud much like a cow. So why don’t we eat Giraffes?
There is no known method for slaughtering a Giraffe in any documents left to us from the past. It would an ambitious undertaking of a shechain to examine and determine on their own the method of slaughering. There are clear rules to help make determinations about where to position the blade etc but no formal document.