Tom, if you have ever have a chance you have to take Tia to a farm with horses or cows. I did this with my old city Rottie several years back and she instantly started herding my friend's horses.

She had never seen a horse up to this point in her life. Her natural instincts kicked in and she rounded up the horses into a pack by chasing them down nipping at their legs. It was the coolest thing I have ever seen.