Every adult Muslim who has wealth equal to or exceeding the Nisab for Zakat must slaughter an animal on the occasion of Eid al-Adha. Islamic guidelines state that Qurbani should be performed between the 10th and 13th days of Dhu al-Hijjah.
The animal that is chosen for Qurbani must be of good health. It must not be disabled and be in good health. There is wide choice when it comes to the type of animal. One can choose to sacrifice goat, sheep, cow, bull, buffalo and camels.
The most important point to remember when slaughtering is to say Takbeer (Bismillah e Allahu Akbar). This will ensure the animal is Halal and acceptable in the court of Allah.