In general, puppy life is pretty sweet. It's a constant rotation of love, eating, pooping, and sleeping, with lots of emphasis on the sleeping. Ours have been adapting pretty well to life a mile high.
I've gotten to take Molly running a few times, and she does really well off-leash. She loves to tear ahead of me and dig around in the bushes, but she never gets too far and she always comes bounding back.
We took all three on a long walk yesterday, on a trail where cattle roam pretty freely back and forth. I run there quite a bit, and I've had to stop a few times to get around a cow in the middle of the running path.
Molly in particular was really curious about the cows, and kept running up to one in particular and barking at him. But as soon as he took a step towards her, she freaked out.
Graham had no idea what to do, and just stood about fifteen feet away, growling and barking his fool head off until we moved along.
So in general, puppy life is good. They've been drinking a lot more water and Sofie has cracked pads on her foot that we've been treating with lotion (imagine how fun THAT is), but I like to think that they are happy here.