Pets

Someone with more smarts than me might have a better answer, but...

As weird as it seems, make your pet a piece of equipment.  And then when you run, highlight them as a piece of "equipment" that you used.  That'll keep track of mileage.

That's what my wife and I are planning on doing.  We also thought of making her a BT account... but that would be really weird.

Since both our avatars are of her, we figured her avatar could be a picture of us!

What I do is I put it under Sports. "Add Sports" and I type out Walking with Stardust and viola. :-)

I still count it as Sports for myself because I got out there and walked. 

Hiking - I need to add "Hiking with Stardust" - since all the hikes I've done was with my doggie. :-)

OR - better yet - new BT account, and instead of "walking", you can add sports, "Walking with Masters" or "Playing at Dog Park".