Having a water bottle in your small animal enclosure is a must from any small pet owner. They hold an amount of water that allows your small animal to drink from when needed. Having a water dish does not work for them as they will spill it, put food in it or just sit in it. Make sure the bottle you buy is big enough for the summer months, as they can drink a lot of water during the warmer days. We have bottles that will suit guinea pigs, rabbits, rats, mice, hamsters, ferrets and more.