Question about PetSafe Seaside

It made a funny noise but nothing serious.

Idle running of the small aquarium pump can lead to overheating and, in the worst case, to a defect due to dry friction over a longer period of time. However, the filling volume is high, and a check every 2-3 days is sufficient for a cat.

I only have one dog and he can't switch the appliance off. If he drinks a lot and the appliance is empty, will the appliance switch itself off or do you always have to make sure that it is never empty?

The cat goes to drink from the toilet