big, curious dogs, sorta like cats. they want to know what you're doing when they see you and they want to smell everything you're doing and they want to play all the damn time.

I did IT work on a farm for a few weeks and was there 3-5 days a week. The cows were far more active than any other animal I saw. They clearly liked each other and had friends and non-friends in the group. They would run and walk dozens and dozens of miles per day and a horse would move 1/4 mile in total over the course of an entire day.