I don't think a taser would work AT ALL.

Because what are they made for? There can only be one subject and that would be humans; there is a reason for that. A human compared to a bear...There is a huge size difference and tolerable voltages.

The tasers are set to the case where it will bring down a human being, but will that same amount be the same for a bear? Or a cougar? It's simple as that. The bear will more than likely be more mad. So is that slight chance the bear will walk away compared to it charging at you be worth the risk?

Don't be stupid, just get the spray.