I thought this was going to be the urban legend about the couple that adopts a Mexican rat thinking it is a small dog.
http://www.amazon.com/The-Mexican-Pet-Legends-Favorites/dp/0393305422
Cute little dog. Now if you want really big try my Dane on for size. I got her at ten weeks. She is not quite 2 years now. She hit standard Dane size (32”) and just kept going. She is pushing 39 inches now. She is so long I have to buy a pony blanket for her. I have purposely kept her trim at 160 pounds. When I take her out everyone wants a picture. Thank the Lord she is sweet like most Danes.
theres a great dane MIX...in the neighborhood...that seems to confuse a lot of the locals...