Jen Guyton / Caterpillar (Megalopygidae) captive in a butterfly house in Monteverde, Costa Rica. This caterpillar shows aposematic, or warning coloration.

MYN / Javier Aznar / Moth (Trosia sp.) Mashpi, Ecuador. Meetyourneighbours.net project

Konrad Wothe / Hairy caterpillar (Megalopygidae) Panguana Reserve, Huanuco province, Amazon basin, Peru.

MYN / JP Lawrence / Megalopyge albicollis Gamboa, Panama. Meetyourneighbours.net project. The hairs on this are very painful and can cause a stinging sensation for hours.

MYN / JP Lawrence / Moth caterpillar (Megalopyge albicollis) Gamboa, Panama. Meetyourneighbours.net project. The hairs on this are very painful and can cause a stinging sensation for hours.

Nick Hawkins / Flannel moth caterpillar (Megalopyge sp.) in Choco region, Northwestern Ecuador.

Barry Mansell / Southern flannel moth caterpillar (Megalopyge opercularis) North Florida, USA, October.

Barry Mansell / Puss Moth Caterpillar (Megalopyge opercularis) North Florida, USA, October. Controlled conditions.

Barry Mansell / Puss moth caterpillar (Megalopyge opercularis) North Florida, USA, October.