When I chose it back in 2006, I had a six year old chihuahua who was very portly. He was the chubbiest of all of my chihuahuas. I still have him now, but he's turning 13 this year and we've begun feeding them a homemade sweet potato, pea, and turkey blend, so they've all gone back to normal sizes to not stress their joints. He's still got a fat neck, though.
And he's aging, so it's kinda depressing realizing we've had him for so long and that we've got 2-5 years left with him. I actually use a completely different username everywhere else online now since I assumed I'd find it depressing to switch over.
But yeah! I love my fat-necked doggy-woggy. He can be seen in the member index if my 2008-era photo is still there; he is appropriately named Oso.