In commercial.
Einstein seems to like 'snack time'!
- "Fido doesn't seem to mind Doc's experimental sawdust dog food!"
- —K-9 Cafeteria advertiser
A K-9 Cafeteria was a device constructed by Emmett Brown. The machine was essentially a timed door that opened to reveal a compartment of dog food.
The device was probably a later/early evolution of a similar automatic dog feeder that was capable of opening and releasing canned dog food into a bowl at a set time.
