We have a cat scarer on the shed wall which has for the last ten years kept cats away from the pond, so the fish, frogs, toads and newts are all safe. Our dog who is now twelve, but still active chases cats away and squirrels, but not birds - he also enjoys touching the frogs with his nose when they sit on the edge of the pond - this makes them leap into the pond with a big splash...come to that the grandchildren like to watch this event too, and sometimes there are getting on for thirty frogs. I loathe cats. The old cat (thankfully no more) came into our garden attacked my son, and when my dog protected my son, the cat turned on him leaving a claw in his back, but at least my son was unharmed. The area on the dogs back never healed, it would occasionally swell up and exude pus. Even a lion will leave animals it eats alone if it is not hungry, but a cat will still maul it or play with it, and I don't care what anyone says, this is not 'natural' if cats were human they would be in prison for cruelty. People have cats because they don't want the responsibility of a dog. The folk in this area with dogs, clear up after them. It is not the cats at fault like it is not the dogs that are at fault it is the owners...there are a few responsible cat owners, but they are few and far between, it is the irresponsible ones who get cats a bad name.