The attention-grabbing term of Scorpion-Tailed Spider fits this amazing arthropod. Although riveting, it’s not the only name applied to it, though. That’s because it’s also known by such terms as scorpion orb weaver and simply the tailed spider. The astonishing tail, though, remains its most distinctive physical attribute. This also represents another form of gender-based physical difference. That’s because only the females develop this body part. This appendage increases in size with each molting.

The females can arch this bendable tail over their backsides, which gives them the appearance of irate scorpions and prompts would-be attackers to keep their distance. But it’s all an act: The tail cannot sting and this spider is mostly harmless to humans