There is a species of insect that can turn itself into a "stone" to avoid predators. - Apparently.
The Tachinid fly, specifically the species _Orthonisa kochi_, has a unique defense mechanism where it freezes its body in a rigid, stone-like state to deter predators. When threatened, the fly's body will stiffen and become immobile, making it difficult for predators to eat it. This behavior has been observed in the wild in Australia, where the fly's unique defense mechanism has helped it survive in the face of predators.