Humans and their pets.
I am constantly told about humans and their terrifying dogs. Relentless hunters, keen sense of smell, incredibly strong jaws, huge teeth.
Eh. I mean sure, they're giant monsters out of hell. But you spend any time around them and you quickly realize they are joy incarnate. To a dog, everything is the greatest thing ever. They just want to be friends. Play with them and they're a pushover. You ask me, humans are far more monstrous than their dogs.
Cats on the other hand. They're a little smaller than dogs. They sleep all the time. They're absurdly cute and fluffy. But, you look in their eyes, and you see death. They will catch you, and torture you just for fun, before they eat you. They specialize in hiding and jumping out and eating you. Human history has dozens of stories of cats getting loose on island paradises and everything else quickly going extinct. Did I mention they eat you.
The human "diplomat" had come with his pets, and they got loose. The dog was easy. Follow the screaming crowd. Wave a ball in front of its face, then toss it in a secured pen, and voila! Problem taken care of. The army keeps sneaking into the pen to throw the ball for the dog to lunge after. He brings it back in its giant jaws and begs for more. The cat, it's still out there. Citizens disappear. Was it the cat? Probably? All we know for sure is we keep finding hairballs with our little shoes in them. The human tried calling for the cat, but apparently, cats aren't big on following requests, even from humans.
This was in response to a prompt on rWritingPrompts, "You've seen many different intelligent forms of life and how they keep themselves happy. Some journey like you. Others get pets. Today you've encountered humans ... and their terrifying dogs."