Subject: Spikey Caterpiller
Geographic location of the bug: Southern Ohio
Time: 01:38 PM EDT
Your letter to the bugman: I found this outside of my home in southern Ohio, is this a brush footed Caterpillar? Are they harmful to humans?
How you want your letter signed: Shane
Though there are many spiny caterpillars in the Brush Footed Butterfly family Nymphalidae, we believe your caterpillar is a Buckmoth Caterpillar, Hemileuca maia, based on this BugGuide image.