Petey from Our Gang
Petey's owner called him an American bull terrier. Which is another made up designation. (If I'm wrong, please let me know, but I haven't found "American bull terrier" in any formal breed listing.) The dog (or dogs) that played Petey look fairly pit-ish to me, and much smaller than an American Bulldog.
Of course, the person who wrote in about this designation also claimed that I was talking about the RCA dog. I wasn't. If memory serves that was a jack russell or something. This person also says that Valentino couldn't have been an 85 pound pit bull. Well, most pit bulls are around 50 pounds, but that doesn't mean that there aren't some large variations, particularly since there isn't a breed standard.
What concerns me most about this anonymous poster is that he/she says that they didn't support breed legislation until they got an American Bulldog. Now they love the dog but think they should be banned.