I think their cuteness is why they're so popular. But, make no mistake, they're a very active dog. Not good for retired folks that want lap dogs.
They're noisy and rambunctious and into EVERYTHING. They are good at staying out from under your feet. I'll give them that. They're not graceful either. They just run and leap all over the place.
Merry leaps over Brutus long wise. She'll snatch a toy and dare him to chase her and take it from her. It's cute. If he ignores her, she comes running into his face and taunts him with the toy in her mouth, and when he tries to snatch it from her, she turns tail and runs and he gives chase.
And he likes to tug. Tug-o-war is his game of choice. And their little growls are hilarious.
They're as much fun to watch as they are to smooch on. I'm always laughing to tears.