If you have multiple animals sometimes in cages or fenced dog crate areas, you will undoubtedly find these handy! I used these for both hens and rabbits, with the modular dog fencing and with wire cages as needed. Perfect for food or water, this lot of 15 red plastic small animal feeders also worked for me in other capacities. I have two in use right now that I drilled holes in, popped some screws in, drilled tiny holes in the bottom to allow powder to escape, and attached them to wall studs to hold grit and oyster shells for my hens. These 15 are unused but were in a shed so there could be some associated dust here and there. Each one measures about 5 5/8" long, 3 1/2" wide (not including the hangers), and 2 5/8" deep. From a smoke-free, fragrance-free home with a feline (and chickens, plus these used to be around rabbits as well. But the chickens aren't inside. I'm not quite that crazy. Yet.)