That’s life: predators are always on the prowl. By nature, cats hunt these small creatures, but here in the city, if they spot one, they simply play with it; cats feed on tuna and specialized commercial food. I notice a recurring pattern, dogs and cats tend to suffer from the same ailments. It seems the food isn't good enough, or perhaps the veterinary business needs to be profitable. I’d better not speculate on the matter, but it certainly isn't normal.