Abu Tha'labah Al-Khushani said:
I said: 'O Messenger of Allah, we live in a land where people hunt, and I hunt with my bow and with my trained dog, and with trained dog, and with my dog which ins not trained.' He said: 'whatever you catch with your bow, mention the name of Allah over it and eat. Whatever you catch with the trained dog, mention the name of Allah over it and eat. Whatever you catch with your untrained dog and you reach it while it is still alive, then slaughter it, and eat. ( Sahih