Chained dogs feel confined, trapped and will do anything to get off the chain. They appear to be un-trainable, when really they are just going stir crazy.
Most chained dogs will take off on you any chance they can to get away. And why not? Coming back means they have to go back on the chain with no freedom. Not all dogs will be biters and runners if chained, but all dogs would be happier, with a better temperament, if they were not chained. Dogs who are always tethered are stressed, bored and anxious.
I am not talking about the occasional time when you need to tie your dog up for a little while. There will be times when you will need to tether your dog. I am talking about the Backyard Dogs that have a dog house, a chain and nothing else. The ones that spend the majority of their time and life chained, sitting and waiting, with nothing to do but watch and protect. Electric fences are highly recommended. You cannot see them, so your yard will look the same and your dog will feel the freedom that dogs enjoy, being able to see around him, yet still have the same safety as an above-ground fence. They are relatively cheap compared to the above-ground fence.A regular (above-ground) fence is another option. The bigger the area your dog has, the happier he will be, and in return, the happier you will be with your dog. Outside kennels… they are much better than chains and lets your dog run free and play IF the kennel is large enough. But once again the dog is in a confined, restricted situation so please take them out for exercise daily. In the end it all depends on how much time you spend with your dog. If you do not have time to spend with a dog you probably should not have one.