We purchased this since our guinea pigs go through a bottle of water a day. We're a little disappointed in it and went back to our old bottle. It leaked everytime they used it. They prefer the old bottle with the ball bearing in it.

Pros: holds a large amount of water

Cons: takes up a lot of space in the cage

This is a great water bottle that is easy to use and easy to fill. Be careful not fill fill it to far as there is no seal and, while your pets is drinking, it can slosh out the top if it's filled to far.

Pros: easy to fill

Cons: can't fill all the way

I really like this bottle, it holds a lot more than normal water bottles and it has a flip top for easy filling.

Pros: holds alot, easy to use and fill

Cons: none