I have three dogs, one small, one medium and one large.  This fountain worked nicely and I think the dogs liked it, but I had to fill it up almost daily.  The capacity is not large enough for more than one small pet.  If it were to run dry, the pump would burn up.  There needs to be a larger model with automatic pump shut off and maybe a way to connect it to a water source. [This review was collected as part of a promotion.]