hi there
the name "bulldog" would work in germany. there was a old company named "Lanz" wich build strong and powerfull tractors - the bulldog.
http://en.wikipedia.org/wiki/Lanz_Bulldog
this old name still stands in germany as a generic term for tractors.
I'm not sure whether this combination would work with the dog in the us.
greetings
michael
--- as you can see ... english is not my favorite language ---
Yea, but even they didn't use the overpowering face of a bulldog, and maybe they should have....as it relates to the name of the tractor.