Vertebrates, among all other species, are the most threatened. To note: vertebrates include mammals, birds, reptiles and amphibians. Therefore, they comprise animals that we empathize with pretty well: elephants, rhinos, tigers and lions (mammals), pigeons and parrots (birds), snakes and lizards (reptiles), frogs and salamanders (amphibians), just to mention a few. Since the sixteenth century, more than three hundred vertebrate species faced extinction, and lots of them are currently in danger and on the verge of being extinct.