Kordon OASIS #80610 All Weather Water Bottle for Guinea Pig, 16-Ounce All weather guinea pig water bottle with double ball point vacuum-valve is durable and use by one pet Ideal for guinea pigs, small rabbits, ferrets, chinchillas, prarie dogs and similar size small animal Comes with the angled cap and a large 7/16-inch diameter stainless steel drinking tube Available in 16-ounce size