Today it has been raining, sometimes heavily, but we managed to put puppies out for a couple of hours. It's a challenge to keep puppies occupied and their brains challenged. To provide enriched environment for the pups and learn something about them, today we attached several small balloons to their pen and watched their response. Some played with the balloons, some were not interested. Some were persistent, others were not. Some learned something during the play and adjusted their strategies.
I learned quite a bit about individual pups while watching them for just few minutes.