The Summons by A.E.W. Mason

Just outside Senga to the north, in open country, stands a great walled zareba, and the space enclosed is the nearest approach to the Garden of Eden which this wicked world can produce. The Zoological Gardens of Cairo and Khartum replenish their cages from Senga. But there are no cages at Senga, and only the honey-badger lives in a tub with a chain round his neck, like a bull-dog. The buffalo and the elephant, the wart-hog and the reed-buck, roam and feed and sleep together. Nor do they trouble, after three days' residence in that pleasant sanctuary, about man -- except that specimen of man who brings them food.

All day long you may see, towering above the wall close to the little wooden door, the long necks and slim heads of giraffes looking towards the city and wondering what in the world is the matter with the men to-day, and why they don't come along with the buns and sugar. Once within the zareba, once you have pushed your way between the giraffes and got their noses out of your jacket-pockets, you have really only to be wary of the ostrich. He, mincing delicately around you with his little wicked red eye blinking like a camera shutter, may try with an ill-assumed air of indifference to slip up unnoticed close behind you. If he succeeds he will land you one. And one is enough.