For setup the control panel is somewhat hard to read and you'll want to keep the instruction book close as setting/resettihng is not intuitive; We have 2 Cavalier King Charles Spaniels and  have a feeder for each. I can't imagine a larger dog being able to use it as there's very little room between the dispenser and bowl that sits partially under the dispenser. The bracket that holds the bowl close to dispenser could be more secure.