Our expert says:
Yes it is possible for dogs to be obsessive and your dog sounds like he is! I'm sure his thin condition is due to this hyperactive (and stressed?) behaviour. However, from experience I know it is very difficult to change this behaviour. He has an occupation which is relatively harmless and I feel if you stopped it he may start doing something less desirable - e.g. digging, destroying, escaping, hunting, fighting. If you can find something more constructive for him to do then go ahead - it's his only hope. Apart from regular walks out of your property, interesting meals, a view out and access to the house, you could get him some "smart" toys. One is called a Cong and is a rubber cone which is indestructible and can be stuffed with biltong, peanut butter, pellets etc. Another is called a Treat Ball which can be filled with biscuits or pellets which drop out every now and then - also indestructible. These are available from some vets and pet shops and are expensive as they are imported, but they are worth getting as they last. They may also encourage him to eat more.
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