Dr. Abdul Satar Fathullah Saheed says:

It is right to eat a giraffe after slaughtering it that one owns. This ruling stands as there’s no general neither specific proof that prohibits its consumption. More so, there is not any saying attributed to a scholar who forbade its meat hence, it is lawful. For indeed, the basis in everything is permissibility until we affirm its prohibition. 

Allah, the most high, has said:

Say, “I do not find within that which was revealed to me [anything] forbidden to one who would eat it unless it be a dead animal or blood spilled out or the flesh of swine – for indeed, it is impure – or it be [that slaughtered in] disobedience, dedicated to other than Allah. But whoever is forced [by necessity], neither desiring [it] nor transgressing [its limit], then indeed, your Lord is Forgiving and Merciful.”[Quran 6:145]

The messenger of Allah, (), has laid down regulation in what are prohibited among the birds and animals. It is also narrated from the Prophet that he prohibited anything that posses canine among the predators. Also whatever possesses claws among the birds.

A giraffe doesn’t have a canine, and it is not a predator, neither eating its meat will result in discomfort because it feeds on grass. It is then lawful because any animal that habitually feeds on grass is lawful (halal). An exception to this ruling, is the animals that sheriah text specifies unlawful such as domestic donkeys which the prophet () forbade eating its meat on the day of Khaybar despite it feeds on grass. 

Allah has subdued all what is in the sky and all what’s on the earth for us for our benefit. Allah, the most high, says: And He has subjected to you whatever is in the heavens and whatever is on the earth – all from Him. Indeed in that are signs for people who give thought. [Quran 45 : 13 ]