A water chevrotain (Hyemoschus aquaticus), also known as a fanged deer. When threatened, these largely nocturnal animals retreat to water, where they can remain hidden almost completely submerged below the surface. ‘Tropical rainforests don’t give up their secrets easily,’ says Emma Stokes, who oversees WCS’s operations in Nouabalé-Ndoki. ‘You can spend years walking through these forests without seeing much of the extraordinary wildlife that lives there. You only know it’s there by the signs it leaves behind’
