I've come up with five - you all got anymore?
1. When I'm laying down on the floor in the "corgi-pose", if I wag my tail, I can actually help my owner sweep up the fur!
2. When I'm swimming - it's like a rudder.
3. I have a built-in chew toy and tug toy!
4. Let my owner know I;m really happy to see her.
5. Thwap the cats in the face with my tail as I walk by them.