Ladybugs

Ladybugs display some impressive defense mechanisms.

An excerpt from the article 16 facts about ladybugs
Their bright colors warn of potential predators, suggesting they are not a tasty treat. Apart from their looks, ladybugs also emit a yellow liquid from their leg joints, which is toxic to many mammals and birds. Thirdly, they can just simply “play dead”–they remain still at their backs until the threat passes.