Most pets are usually eager to please their owners, so when you find a pet not listening to you, it can be very frustrating. More often than not, there is a reason why your dog is not listening, especially if it did before and it is now demonstrating a new behaviour. Here are a few reasons why the dog is not following your instructions.
It could be the dog has lost its hearing. If your dog stops turning its head when you call it and sleeping through very loud noises, then have its hearing checked. Deafness affects dogs at any age but it is more common with older dogs.