This snake grows a fake spider on its tail to lure birds; scientists scanned the bizarre appendage and found surprisingly normal bones inside

• Spider-tailed horned viper (Image Credit: Omid Mozaffari)The natural world is full of animals that use mimicry to survive, but few examples are as unusual as the spider-tailed horned viper.
• Native to Iran, this elusive snake has evolved a remarkable tail tip that resembles a spider, complete with a bulbous body and dangling, leg-like structures.
• The snake moves the strange appendage in a way that can attract birds close enough for it to strike.