Thank you for the link.
Most of these are so hard to watch, that I must steel myself to do so. And I do so that I do not forget why I post these stories.
Instead, I elected to watch the Dogo Argentino come out of the water to chase the Coyote/young Wolf and then reconsider. That was some interesting footage.
I'm not going through the videos - this is a hot button issue and I prefer to err on the side of family safety - I saw one report where St. Bernards were listed in the top 2 or 3 dangerous dogs with pit bulls lower on the scale.
My family had two St Bernards when I was young. Barry (Goldwater) and Barney (succeeded Barry). I had them both trained to obey commands with a finger snap and hand command: sit, stay, lie down, come, speak etc.
Handy for big dogs whose eyes are at kitchen counter level.
My dogs, same training: cattle dog (male), Aussie (Female) - both blue Merle breeds.
;-)