12. Rhodesian Ridgeback
A Rhodesian Ridgeback is generally overly energetic and wants to play all the time. But if left alone too long, they can turn their energy towards aggression and destructiveness. Bringing this dog to a park is also a bad idea, as they would tend to chase smaller animals, even small dogs. First-timers shouldn’t try to handle a Rhodesian Ridgeback on their first time without proper training.