Spaniels can turn into some seriously vicious beasts if you don't keep up with their socialization.

With bulls, when it comes down to it the base opinion you get from people with negative views on the dogs is that their anatomy (jaws) are better suited for mangling you good. Basically stating that they would rather get attacked by a spaniel than a bull. This never sat well with me because you can use that same critera, slightly modified, to wipe out breeds by the score. If we're not carefull all we'll be left with are little yappy shit dogs and Beagles. (though once the first dog bone shortage hits the market we might have to do away with even the beagles)

Also, most of the people I've seen in various discussions online about these dogs - such a hot topic as of late unfortunately, which is funny because it was rotties that had this kind of press when I was a kid - the people that are against their breeding typically are not dog owners. I'm not saying that of everyone with this opinion, but it usually appears true for the loudest and most repetitive.