I thought it was cats that did that hunted chickens in Minecraft XD Imagine if you made an entire scene about like an underground legion of animals planning to stop the tests, but the dog sniffs them out and is look down on them.
Hoppers dispense any items you throw at it into a chest, furnace, or any other thing. I personally use it for extreme redstone contraptions (vending machines, 16 bit computers, etc). btw, awesome awesome awesome render! what software?