Sheikh Rashîd al-Hasan, professor at King Khâlid University
Donkey flesh is forbidden (though horse and zebra meat are lawful). The evidence fot this prohibition is the hadîth related in Sunan Abî Dâwûd and Sunan al-Tirmidhî with a good line of transmission to al-Miqdâd B. Ma`id Yakrib that the Prophet (peace be upon him) said: “It is unlawful for you to eat the flesh of donkeys and carnivores possessing fangs.” The cat and dog are included in this prohibition, because they are carnivores possessing fangs.
It is related in Sahih Muslim that Ibn `Abbâs said: “The Prophet (peace be upon him) forbade eating the flesh of fanged predatory animals and birds with talons.” This would include the dog, the cat, the bear and other similar carnivores as well as birds of prey like eagles, hawks, and falcons.
As for why these animals are forbidden, we do not need to know this in order to obey the command of Allah in what is permitted and what is forbidden. We were forbidden to eat the flesh of some animals and we must obey. If you study the wisdom behind why these animals were forbidden, you will be sure to find many benefits.
Source: Islam Today