Beyond what most cat owners think, if you let your cat out at night, they kill on average of 20 mice, birds, or whatever they can get to. Although you think your cat is tamed because it rubs on your leg, or speaks to you, they are not tame. I recently watched a documentary about cats and their secret lives. Basically when they meow or speak to you, it is the same thing as when a lion roars. If you let your cats out they will kill anything they can, no matter how tame inside they are outside they are predators. My mother has cats they don't go out side, but I always tell her you don't own your cats they own you. Most people with cats bend over for their every need. Like they have to have a certain litter, or food, or have to be pet or left alone. They own you. Dogs are not like that give them food and water, and they are good. they listen to your commands and don't do what you don't want them to do. Cats do whatever they want. I don't want to come across like I don't like cats, I just know a lot about them. I had many cats in the past. I have fish now much more simple creatures to take care of.