In Australian rodeo regulation:

  The roping of an unbroken horse or untrained bull is illegal.

In Australia at least three people have been injured by bulls in past two months (man suffered serious injuries after being gored by a bull at Mortlake livestock exchange / woman suffered significant leg and pelvic injuries following an incident with a bull on a private property at Crediton in Mackay / etc.)

Three years back 15 or so people were injured after bull escapes, charges through crowd at Kununurra rodeo - https://www.abc.net.au/news/2023-05-29/bull-escapes-kununurr...

There's not a lot of bull specific carve out, but still much regulation around dangerous animals.

Even at the time, the example was almost certainly more representative of the concept than meant to be a specific thing that happened all the time. Then as now, people have animals; animals sometimes do bad things; when is the owner responsible?

There are certain cats that are aggressive about expanding their territory; they'll break into other houses and attack the cats there. (Had this happen to us -- cat came in through a cat-flap a few times, until something happened that scared enough that it never came back.) The first time your cat does that sort of thing, you can say "I had no idea, it's not my fault." But if your cat has a habit of doing that, and you still let it out at night, you're no longer blameless.