There are a couple of them which offer selectable force of the fountain effect (e.g. https://www.chewy.com/petlibro-stainless-steel-dog-cat/dp/378782 https://ww

There are a couple of them which offer selectable force of the fountain effect (e.g. https://www.chewy.com/petlibro-stainless-steel-dog-cat/dp/378782 https://www.chewy.com/petlibro-stainless-steel-dog-cat/dp/37...), so it may be their domestication has tamped down the "babbling stream" identification circuits and they need something a little softer I'd also be on the lookout for the electrical hum mentioned in TFA; that would drive me crazy, and I can't speak to how it would make any kitty wary Also, and this may go without saying, but watch out for the fountain(s) being made out of materials which are hard to clean