From the Nature Fighting Back department? Here’s a story on the BBC website about a pack of starving black squirrels biting a stray dog to death in a Russian park. The attack reportedly lasted about a minute, and they scampered off at the sight of humans, some carrying pieces of flesh.

On the one hand this whole story sounds unverifiable and somewhat dodgy (it’s not like there’s anything more than a few alleged eye-witnesses reporting this thing); on the other hand, squirrels are just rats with nicer tails, so who knows?