It occurs to me that as much as “humans are the scary ones” fits sometimes, if you look at it another way, humans might seem like the absurdly friendly or curious ones.
I mean, who looked at an elephant, gigantic creature thoroughly capable of killing someone if it has to, and thought “I’m gonna ride on that thing!”?
And put a human near any canine predator and there’s a strong chance of said human yelling “PUPPY!” and initiating playful interaction with it.
And what about the people who look at whales, bigger than basically everything else, and decide “I’m gonna swim with our splashy danger friends!”
Heck, for all we know, humans might run into the scariest, toughest aliens out there and say “Heck with it. I’m gonna hug ‘em.”
“I dunno. I gotta hug 'em.”
And it’s like the first friendly interaction the species has had in forever so suddenly humanity has a bunch of big scary friends.