If you liked the Piginator ( http://www.planetminecraft.com/project/the-piginator-a-small-efficient-animal-farmer/), then you'll love this! It uses a simpler design (except for the pistons, which aren't needed) than the first Piginator, but still has the same functionality! It is very good because it works on any animal except chickens, and the meat drops will always be cooked! This device can be used for any amount of animals, and can have multiple types of mobs in one canister! Enjoy!