Winging the changes

DOGS are extraordinary animals, able to survive on whatever is available. In India, I’ve watched pye-dogs that live by scavenging. They rarely get the chance to eat meat and are usually painfully thin, but this doesn’t seem to reduce their zest for life.

Here in Britain we spend billions of pounds every year on specially formulated diets for our dogs, but this doesn’t make them any healthier than their Indian cousins. One of the reasons is that we tend to over-feed them, with the result that an estimated 50%