In this role, due to their working heritage, border collies are very demanding, playful, and energetic. They thrive best in households that can provide them with plenty of play and exercise, either with humans or other dogs. Due to their demanding personalities and need for mental stimulation and exercise, many border collies develop problematic behaviors in households that are not able to provide for their needs. They are infamous for chewing holes in walls and furniture, and destructive scraping and hole digging, due to boredom. Border collies may exhibit a strong desire to herd, a trait they may show with small children, cats, and other dogs. The breed's herding trait has been deliberately encouraged, as it was in the dogs from which the border collie was developed, by selective breeding for many generations. However, being eminently trainable, they can live amicably with other pets if given proper socialization training.