Oil beetles
Scientific name: Meloe
 Oil beetles 
  Scientific name: Meloe 
 
  Photo By Charlie Hohn , used under CC-BY-4.0 /Cropped and compressed from original  Description
 The intriguing Meloe genus, commonly known as oil beetles, offers an extraordinary glimpse into the complexity of nature. These beetles are notable for their ability to secrete a potent compound called cantharidin, which is highly toxic to predators and can cause serious harm to humans if handled improperly. Contrary to what one might think, the Meloe do not synthesize this toxin themselves but instead acquire it through their diet during larval stages, showcasing a remarkable example of chemical warfare in nature.