What dog breed is Hooch from "Turner & Hooch"?

"Turner & Hooch" paired America's sweetheart with a Dogue de Bordeaux who drooled his way into movie history. Also called a French mastiff, the breed was basically unknown to Americans when the film came out, with about 300 of them in the entire country. The filmmakers looked at dozens of different breeds while trying to find the right balance of size, energy, and slobber. When they settled on Beasley the dog, he only got a few months of doggy acting classes before costarring with one of Hollywood's biggest names. Hanks spent weeks bonding with the dogs before filming just so they'd actually look at him instead of their trainers, and he called it the most exhausting shoot of his career.