Ladybugs (also known as ladybirds or lady beetles) play dead to evade predators. This behavior, known as thanatosis or tonic immobility, is a defense mechanism where the ladybug will remain still, often falling from the plant or surface it is on, and appear lifeless. By doing so, it can avoid detection or seem unappealing to predators that prefer live prey. 

Additionally, when threatened, ladybugs may secrete a foul-smelling and bad-tasting fluid from their leg joints, which can deter predators. This fluid is known as "reflex bleeding" and contains toxic compounds called alkaloids, further discouraging potential threats. Combining these strategies helps ladybugs effectively protect themselves from being eaten.