I Animals That Practise Camouflage

 II Animal Musicians

 III Animals at Play

 IV Armour-Bearing and Mail-Clad Animals

 V Miners and Excavators

 VI Animal Mathematicians

 VII The Language of Animals

 VIII In Their Boudoirs, Hospitals and Churches

 IX Self-Defence and Home-Government

 X Architects, Engineers, and House-Builders

 XI Food Conservers

 XII Tourists and Sight-Seers

 XIII Animal Scavengers and Criminals

 XIV As the Allies of Man

 XV The Future Life of Animals