Okay well my brother went outside and found a caterpillar, no big deal wrong! He takes it and puts it in a tank. Guess what? It escapes! Whats worse is IT STINGS! What do we do! Will it just die? I do not want to get stung. Oh yeah it is a white marked tussuck moth caterpillar. How bad is the sting? I hope it doesn't sting us.