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Scarlet macaw Ara macao pen and ink illustration with colour top wash.  Illustration from “The Hidden Universe” by Alex Antonelli.

Scarlet macaw parrot Ara macao perched on a branch with foliage.  From The Hidden Universe: Adventures in Biodiversity by Alexandre Antonelli

Electric eel Electrophorus electricus; complete animal and longditudinal cross section showing the three electric organs; namely Sach’s, Hunter’s and Main organ. Illustration from “30 Animals that made us smarter” by Patrick Ayree (BBC Books)

Electric eel Electrophorus electricus; complete animal and longditudinal cross section showing the three electric organs; namely Sach’s, Hunter’s and Main organ. Illustration from “30 Animals that made us smarter” by Patrick Ayree (BBC Books)

Arapaima with scales Arapaima gigas Illustration from “30 Animals that made us smarter” by Patrick Ayree (BBC Books)

Arapaima gigas fish showiung its distinctive scales and “etched” head Illustration from “30 Animals that made us smarter” by Patrick Ayree (BBC Books)

Yellow headed amazon parrot Amazona oratrix on perch with red epaulettes

Pen and ink Jaguar Panthera onca illustration showing the big cat lounging in a tropical tree looking down at the viewer

Pygmy marmoset Cebuella pygmaea

Emegent head of the Giant otter Pteronura brasiliensischewing on a recently captured fish

Amazon Hot rod Strawberry dart frog Oophaga pumilio with foliage

Amazon poison dart frog Dendrobates azureus