I’ve always wondered if these were any good but decided to try it for my cat.  He loves it!  He drinks out of it like it’s a water fountain.  He used to try to do this at the kitchen sink and it’s definitely better for him to have his own little water fountain.  He sees the water moving and doesn’t have to put his paw in it to make it move like he used to.  I love that the water stays fresh longer and it holds a gallon for those times when he has to stay home a little longer but himself.