Well, they continue to grow. They are now 4 weeks old today. They like to explore and play in the box, on the box, and have little bursts of silly puppy energy. They continue to get handled, turned up righ. And upside down, and have all their toes and all their other puppy parts touched. It is best to teach them this is expected now while they are 6 pounds, rather than wait until they are 100 pounds!