This is a caterpillar with a message and the message is ‘Back off.’ This is illustrated by the orange and black coloring and black spikes, which in this case conveys that these caterpillars are poisonous. Fortunately, I wasn’t hungry at the time so no harm done. Passion vine butterfly caterpillars, on the other hand, seem to be permanently hungry. Whenever I see them they’re munching leaves like old time video game characters.
Posted in response to Becky’s October Squares challenge theme of ‘Past Squares – Spiky.’ See more responses here.