At the risk of being vaguely relevant, I've seen the suggestion that the problem with cyclists and bears is that we're relatively silent, compared to a walker, so more easily surprise an scare the bear. I'm not sure what is a more practical approach to be more noisy. The relative quietness of a bicycle is one of the appeals to me, but it's also the downside in some situations, including the aforesaid bears, and inattentive pedestrians on shared use paths.
I'm happy to stick to the UK, and the somewhat lower risk of being attacked by a Wowbadger running in front of me, or a stealth sheep/rock on Dartmoor.