Are there any poison catapilliars

yes

There are a couple of venomous caterpillars. They don't bite, but have spines or spikes on their bodies that will inflict a nasty wound. Fatalities are very rare, though they do happen. A woman from Alberta Canada died this year after stepping on a spiny caterpillar while in Peru. Most likely she stepped on a member of the Lonomia family.

The Lonomia Caterpillar which is one of the few that can cause serious damage is found throughout South America. It's sting can cause fatal hemoraging and kidney failure. Most however, just leave you with a bad sting, which will cause burning, inflammation around the sting, numbness, swelling and in some cases nausea, all depending upon what you came in contact with.

Here are a few more that can cause a bad sting: Saddleback caterpillar Puss caterpillar Io moth caterpillar Hag caterpillar Buck moth caterpillar Spiny oak-slug caterpillar Flannel moth caterpillar

有毒的毛虫确实存在，比如一些种类的毒蛾幼虫，它们可能会分泌毒素，对人类造成皮肤刺激或其他健康问题。如果你接触到不认识的毛虫，最好避免触摸，并保持警惕。如果你被咬或接触到了可能有毒的毛虫后出现不适，应该尽快寻求医疗帮助。