When is a dog a pig?

I was walking the dogs when I saw what looked like a very odd dog crossing the road up ahead. As I pulled even with the driveway the dog had entered, I looked to see if he was there and lo and behold, there stood a pig staring at me. Even the dogs were too startled to react. We all stared at each other for a minute and then the pig turned and trotted down the driveway like he owned it.

Ah Alaska!