Uropygid
Uropygids are more commonly called Vinegaroons, or Whip Scorpions. Tailless Whip Scorpions are actually Amblypygids. These large arachnids are common pets because of the fact that they're harmless. They could give you a cut, but nothing much more. The pedipalps on these invertebrates are modified into stubby claws on spike tipped arms. They will grab their prey and crush it in their arms and eat it. Their long whip-like tail (hence the name) can shoot a vinegar like liquid at an attacker (hence the other name). They are very slow, but are like tanks to bugs.