Proof if you ever need it that they are a species totally unlike us.
The dogs we live with may be safe, but we should never assume other dogs are. Strange dogs are never to be trusted. Some of them have been taught, yes taught, to chase cats. Others just do it for fun.
Cats have lost their lives in the jaws of dogs.
Even a household dog must be kept in its proper place. Don't be afraid to swipe or bite. Most dogs that live with us are cowards at heart and will retreat if attacked. It's usually only strange dogs that we have to run from.
Dogs should be lowest in the pecking order. The hierarchy should go like this:
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Middle: Human,
Bottom: Dog.
For information on how to train a dog go to: