Are hyalophora cecropia caterpillars poisonous they have spines that look like stingers?

This particular caterpillar is actuallylarvae of a moth, despite its spikes and large appearance it does not bite or sting. it only live for a few weeks! and it's main purpose is to mate. You can get more information about it at http://counties.cce.cornell.edu/oneida/home%20garden/INSECTS/Cecropia%20Moth.pdf just copy and paste this it will take you directly to the site your looking for.