A young gorilla settles on his father's back after clambering over him, pausing briefly, still watchful, in an unguarded moment of rest between them.

A silverback rests on his side, close-cropped. Light catches the silver sheen across his chest, the muscle beneath visible in shadow.

A white rhino approaches at an unhurried pace, her horn left uncut, grown as nature intended. A dignity too many never live to show.