Georgette Douwma / Spangled emperor (Lethrinus nebulosus) watching a Blue spotted ribbontail ray (Taeniura lymna) that is burrowing in the sandy bottom for prey. Egypt, Red Sea.

Fiona Rogers / Lion-tailed macaque (Macaca silenus) baby aged 3-6 months. Anamalai Tiger Reserve, Western Ghats, Tamil Nadu, India. Mar 2013.

Anup Shah / Lion-tailed macaque (Macaca silenus) young male approaching with curiosity. Anamalai Tiger Reserve, Western Ghats, Tamil Nadu, India.

Anup Shah / Lion-tailed macaque (Macaca silenus) licking resin sereted from a tree trunk. Anamalai Tiger Reserve, Western Ghats, Tamil Nadu, India.

Suzi Eszterhas / Keel-billed Toucan (Ramphastos sulfuratus) looking downwards, Northern Costa Rica, Central America

Enrique Lopez-Tapia / Zodiac boat with curious leopard seal (Hydrurga leptonyx) Wilhelmina Bay, Gerlache Strait. Antarctic Peninsula, Antarctica.

Ernie Janes / Spring lambs watching male Common Pheasant (Phasianus colchicus) UK, April

Andrew Parkinson / Snow bunting (Plectrophenax nivalis) fascinated by its own reflection in a tidal lagoon, Norfolk, UK, January.

Anup Shah / Olive baboon (Papio cynocephalus anubis) fascinated by a baby aged 3-6 months cradled by its mother, Masai Mara National Reserve, Kenya. March.

Paul D Stewart / Great Argus Pheasant feather (Argusianus argus). Composite photograph of Argus secondary wing feather left and right Fig 56. Page 143 Vol II of Charles Darwin 'The Descent of Man and Selection in Rela...

Paul D Stewart / Detail of Great Argus Pheasant (Argusianus argus) zoo specimen, from SE Asia. Secondary wing feathers showing ocelli. Page 143 Vol II of Charles Darwin 'The Descent of Man and Selection in Relation to...

Paul D Stewart / Illustration of human Flea (Pulex irritans). 1744 August Johann Roesel von Rosenhof with copperplate art and engraving with handcolouring. From 'Der monatlich-herausgekommenen Insecten-Belustigungen E...

Paul D Stewart / 1744 illustration of a flea by August Johann Roesel von Rosenhof; copperplate art and engraving with handcolouring. From 'Der monatlich-herausgekommenen Insecten-Belustigungen Erste Sammlung' (Insect...

Paul D Stewart / Illustration of Death's Head Hawkmoth and caterpillars (Archerontia atropos), 1744, by August Johann Roesel von Rosenhof with his own handcolouring and plate correction. From 'Der monatlich-herausgeko...

Paul D Stewart / Illustration of Death's Head Hawk Moth (Acherontia atropos), 1744, by August Johann Roesel von Rosenhof copperplate art and engraving with his own handcolouring and plate correction. From 'Der monatli...

Paul D Stewart / Illustration of Death's Head Hawk Moth (Acherontia atropos) by August Johann Roesel von Rosenhof with his own copperplate, handcolouring and plate correction, 1744. From 'Der monatlich-herausgekommene...

Paul D Stewart / Orang utan (Pongo pygmaeus) 1731 Physica Sacra (Sacred Physics) by Johann Scheuchzer (1672-1733). The ape is contrasted to 'Hairy Esau' in this folio copper engraving drawn by a team of engravers unde...