I was at a wedding with a bunch of USians (in Australia) one time. Although in general they were lovely and interesting people they went on (and ON) about the spiders and snakes thing. My two responses were
1. Yes, we do have poisonous spiders and snakes, but it:'s not like they hang out on the street corner and hassle you when you go past. I share an area with two types of venomous snake another last time I actually saw one was a good decade ago. And I walk through the bush often.
2. You have BEARS! AND random crazy people are allowed to buy guns (this is hyperbole, please don't get political at me). From the outside that looks pretty scary and yet millions and millions and millions of you manage to survive. Despite the bears! We all just learn to live with our own local dangers, I guess.
(trimming the quote tree)
LOL, I used to live in Yosemite. Bears are fine. The only bears that need worrying about are mainly in Alaska and Colorado. Polar bears and Grizzly bears. Almost everywhere else are just brown and blacks. And as long as you don't bug momma and her babes, or come between them and bacon, you're fine.
No, in Yosemite what I always worried about were the mountain lions and coyotes in large packs.
And the only animal that ever killed a human in Yosemite Valley was a mule deer.
...and as Lorelei_Evil mentioned them, ticked off raccoons can be seriously scary.
I tend to believe that because Australia can be such a unique and diversely harsh environment, it's creatures have evolved in ways that surprise and startle the rest of us.