Sinornithosaurus was a deadly predator living in the late Cretaceous period.

Like its prey Microraptor, it could glide with feathers on its wings

yet on its legs, but Sinornithosaurus was far different

from any other dinosaurs…

Evidence from a recent study shows that

Sinornithosaurus had groves on its teeth like a Gila monster,

used for injecting poison into its prey.

Also, scientists have even located where the venom sacs were.

This was revelutionary, because nobody had

seen a dinosaur which could use poison to kill!

Heres a video showing a Sinornithosaurus having an easy kill.