This pup is only 4 months old and looks to be a retriever or mix of one, both factors that bode extremely well for a good training outcome.
The issue in this circumstance is that the pup wasn't being watched. At 4 months old that pup should be under constant direct supervision AT ALL TIMES with a drag line or long line on the majority of the time. Regardless of whether there are chickens about, there is just too much stuff in the big wide world that a pup can get into (even in a back yard) for it to be allowed unsupervised.
To euthanize this pup because it killed a chicken would be a huge overreaction. To say that it and the birds can never coexist and must always remain apart and give up before even trying to train the dog is ridiculous. The absolute easiest time to influence your adult dog's behavior is when they are a pup.
The issue in this circumstance is that the pup wasn't being watched. At 4 months old that pup should be under constant direct supervision AT ALL TIMES with a drag line or long line on the majority of the time. Regardless of whether there are chickens about, there is just too much stuff in the big wide world that a pup can get into (even in a back yard) for it to be allowed unsupervised.
To euthanize this pup because it killed a chicken would be a huge overreaction. To say that it and the birds can never coexist and must always remain apart and give up before even trying to train the dog is ridiculous. The absolute easiest time to influence your adult dog's behavior is when they are a pup.