We received a question from a reader earlier today about a fuzzy, brown caterpillar that her daughter found in the yard. She actually referred to the brown and fuzzy creature as a “worm,” but we are virtually certain she found a caterpillar, so we’ll simply use “caterpillar” in place of the reader’s “worm” as we move forward. The reader was first of all wondering what the brown and fuzzy caterpillar is, and she also wanted to know if it is dangerous or harmful in any way. Thus, we have a two-part question to address: what kind of caterpillars are fuzzy and brown, and are these caterpillars dangerous?