Pitbulls? The ultimate lap dogs.
(Aside: Ella, Phoebe, & Kolohe are all from the same litter.)
Taiwan Dogs (aka Formosan Mountain Dogs)? Totally not lap dogs. Out of the 30 or so we've fostered, I can't remember a single one that liked to cuddle on our laps--not even the puppies.
So it was with much surprise that Popeye crawled onto my lap the other day. Probably a fluke, but very gratifying.