I have had ferrets for over 9 years and have always used glass water
bottles in their cages. I have never had a leak. They clean beautifully
and hang on a metal holder that is permanently attached to the cage
(none of those annoying wire loops!). They sell them online at That
Pet Place and they are presently listed as $16.99.

http://www.thatpetplace.com/pet/prod/200793/product.web

[Posted in FML 6503]