Lots of teeth but few brains. How they beluave, of course, depends on temperement. Fact is lots of dogs gone feral are dangerous, especially in packs. Any large dog with strong jaws is very dangerous. If they are descendents of dogs bred to kill bulls, they are ipso facto dangerous.
“If they are descendents of dogs bred to kill bulls”
Uh, no they are *not*.
They were bred to grab onto and -hold- the bull as a working function on farms, originally.
The “sport” of bull baiting, made popular in the sexually-repressed and seriously dysfunctional Victorian era involved people betting on whether or not the dog could successfully hold and subdue the bull or whether the bull stomped or gored the dog to death.