Man-eating sharks, rabid dogs, killer crocodiles – some animals seem made to play the big bad in a horror film since they’re inherently scary. But more than any other genre, horror loves to rip off the classics and change them ever so slightly, replacing the sharks, dogs, and crocodiles with every animal they can think of. Sometimes, this leads to silly results, such as frogs, worms, and even sheep.

Shudder’s original series “Horror’s Greatest” listed these 5 creatures as the most unlikely animal attacks in horror history. Which are the creatures that make you question what the filmmakers were thinking?

For more “Horror’s Greatest” lists, check out 10 Must-See Giant Monster Movies and 10 Must-See Stephen King Adaptations.