most \"white\" English Bulldogs have a variety of spotting. If you listen closely to the on camera interview you heard the trainer mention white spray paint...Commonly used to hide Uga's spots...a pure white dogs is very, very rare, but they like to get a young pup with very few spots. As you saw, Russ has very distinctive spotting.
ChemDawg was spot on; pardon the pun, regarding the dogs age. Most English Bulldogs begin to develop health issues around 7-8 years...I'm sure they are already working with the Seiler family to plan the announcement of the heir to Uga VII's short but well pronounced reign.
GO DAWGS!!!!!!!!!!!!!!!!!!!!!
"My advice to you is to start drinking heavily." - Bluto