Morley Read / Timelapse of a King swallowtail (Papilio thoas) butterfly caterpillar drinking water from the surface of a leaf, ), showing bird dropping camouflage, Napo Province, Ecuadorian Amazon. (non-ex)

Morley Read / King swallowtail (Papilio thoas) butterfly caterpillar, showing bird dropping camouflage, Napo Province, Ecuadorian Amazon. (non-ex)

Dave Watts / Emu (Dromaius novaehollandiae) dropping, Victoria, Australia, October.

Emanuele Biggi / Bird-dropping spider (Phrynarachne decipiens) camouflaged on web on leaf to mimic bird faeces, Borneo.

Emanuele Biggi / Bird-dropping spider (Phrynarachne decipiens) feeding on fly, camouflaged on web on leaf to mimic bird faeces, Borneo.

Emanuele Biggi / Bird-dropping spider (Phrynarachne decipiens) camouflaged on web to look like bird faeces, Borneo.

Emanuele Biggi / Bird-dropping spider (Phrynarachne decipiens) camouflaged on web to look like bird faeces, Borneo.

Emanuele Biggi / Bird-dropping spider (Phrynarachne decipiens) camouflaged on web to look like bird faeces, Borneo.

Emanuele Biggi / Spider (Phrynarachne rugosa) with rough appearance resembling lichen, Andasibe, Madagascar

Emanuele Biggi / Spider (Phrynarachne rugosa) with rough appearance resembling lichen, Andasibe, Madagascar

Emanuele Biggi / Spider (Phrynarachne rugosa) Andasibe, Madagascar

Emanuele Biggi / Bird-dropping spider (Phrynarachne decipiens), this spider is a dung mimic itself, and also adds dead prey to web to increase dung like appearance, Poring Hot Springs, Sarawak, Borneo