PH: Pavel Z·horec
This brave butterfly flutters down, using a toothy Cayman’s head, then snout as a landing pad.
But the reptile seems to just grin as the insect perches inches from two rows of teeth
The Brazilian Cayman, a relative of the alligator, hardly blinks as the butterfly lands first on his head, then his nose
Amateur wildlife photographer Pavel Z·horec, 55, from the Czech Republic, got the snap as he travelled down the Rio Negro in a small boat in the Brazilian Pantanal.