Product Name: Critter Canteen, 4 oz. Item Number: 61950 Size: 4 oz. Color: Description: The Critter Canteen is so refreshingly easy to use- just fill it, cap it and hang it. Critter Canteens feature a unique spring-loaded sipper tube designed to reduce leaks. A free wire bottle hanger is included inside every bottle. Super Pet's 4 oz. Critter Canteen is perfect for dwarf hamsters, mice or other little critters. For: Hamsters Mice & Gerbils, Unusual Pets Categories: Bottles & Feeders, Feeders and Waterers.