A face full of bird shot would be a pretty good deterrent to any animal Inwould think.
You would be dead more than likely. Birdshot in the face, probably won’t stop a human either unless the shot was very, very lucky and a pellet found its way into the brain via the eye socket or temporal area.
Dean Weingarten has been publishing articles about Bear attacks using data he receives from his Freedom of Information Act Requests for several years now. The articles I’ve read are most informative and using the data he generated, Bears have been killed with small caliber rifles, (.22 LR), but more times than not, they are totally ineffective.
However, Mr. Weingarten found a case where a Freeper from Canadastan, successfully defended his dog from a Bear attack with a 6” Bowie knife! Truly a lucky badass Freeper!
https://freerepublic.com/focus/f-news/1670661/posts