All scholars are in agreement that a slaughtered animal can be Halal (lawful) with respect to both the use of its meat for food, and the use of its by-products, if it meets the following three conditions:
1. It is not one of the animals or meats that are Haram (unlawful) for the Muslim to consume.
2. No name other than that of Allah is invoked or mentioned over it at the time of slaughtering.
3. The slaughtering has met specific Islamic requirements.