That’s true, a Shepherd certainly requires instruction and a master.
The dumbest dog I’ve met, and I feel bad for saying this ‘cuz she was very sweet, was a Dalmation.
As far as cat intelligence goes, I have a 20 lbs butterball named Stormy who shares the house with three German Shepherds, so I have to give her credit for smarts being able to survive the wolf pack here.
When I was a kid, we had a mutt dog and a cat that were inseparable friends.............