Costa Rica: Monkey on the Beach
Hanging your rucksack from a tree may offer a certain protection against other species, however, the Capuchin monkeys are not easily deterred, especially if they know there are fruits to be found.
Actually, a few minutes later when nobody was looking, a colleague of the monkey in the picture retrieved a shopping bag full of fruit from another traveller and disappeared with it in a high tree.
Seen on a Costa Rica beach.