Although they're only moderate energy dogs, they need plenty of mental stimulation in order to be happy. (soonervet.net)
Lack of mental stimulation for a pig can also lead to aggressive behavior toward humans, such as charging or biting. (bestfriends.org)
Although they're only moderate energy dogs, they need plenty of mental stimulation in order to be happy — they can be noisy and destructive when they're bored. (soonervet.net)