Don’t we say, “There’s no place like home”? That’s certainly what animals feel. Animals are territorial. That is the key to their minds. Only a familiar territory will allow them to fulfill the two relentless imperatives of the wild: the avoidance of enemies and the getting of food and water. A biologically sound zoo enclosure—whether cage, pit, moated island, corral, terrarium, aviary or aquarium—is just another territory, peculiar only in its size and in its proximity to human territory. That it is so much smaller than what it would be in nature stands to reason. Territories in the wild are large not as a matter of taste but of necessity. In a zoo, we do for animals what we have done for ourselves with houses: we bring together in a small space what in the wild is spread out. Whereas before for us the cave was here, the river over there, the hunting grounds a mile that way, the lookout next to it, the berries somewhere else—all of them infested with lions, snakes, ants, leeches and poison ivy—now the river flows through taps at hand’s reach and we can wash next to where we sleep, we can eat where we have cooked, and we can surround the whole with a protective wall and keep it clean and warm. A house is a compressed territory where our basic needs can be fulfilled close by and safely. A sound zoo enclosure is the equivalent for an animal (with the noteworthy absence of a fireplace or the like, present in every human habitation). Finding within it all the places it needs—a lookout, a place for resting, for eating and drinking, for bathing, for grooming, etc.—and finding that there is no need to go hunting, food appearing six days a week, an animal will take possession of its zoo space in the same way it would lay claim to a new space in the wild, exploring it and marking it out in the normal ways of its species, with sprays of urine perhaps. Once this moving-in ritual is done and the animal has settled, it will not feel like a nervous tenant, and even less like a prisoner, but rather like a landholder, and it will behave in the same way within its enclosure as it would in its territory in the wild, including defending it tooth and nail should it be invaded. Such an enclosure is subjectively neither better nor worse for an animal than its condition in the wild; so long as it fulfills the animal’s needs, a territory, natural or constructed, simply
A good zoo is a place of carefully worked-out coincidence: exactly where an animal says to us, “Stay out!” with its urine or other secretion, we say to it, “Stay in!” with our barriers. Under such conditions of diplomatic peace, all animals are content and we can relax and have a look at each other.
In the literature can be found legions of examples of animals that could escape but did not, or did and returned. There is the case of the chimpanzee whose cage door was left unlocked and had swung open. Increasingly anxious, the chimp began to shriek and to slam the door shut repeatedly—with a deafening clang each time—until the keeper, notified by a visitor, hurried over to remedy the situation. A herd of roe-deer in a European zoo stepped out of their corral when the gate was left open. Frightened by visitors, the deer bolted for the nearby forest, which had its own herd of wild roe-deer and could support more. Nonetheless, the zoo roe-deer quickly returned to their corral. In another zoo a worker was walking to his work site at an early hour, carrying planks of wood, when, to his horror, a bear emerged from the morning mist, heading straight for him at a confident pace. The man dropped the planks and ran for his life. The zoo staff immediately started searching for the escaped bear. They found it back in its enclosure, having climbed down into its pit the way it had climbed out, by way of a tree that had fallen over. It was thought that the noise of the planks of wood falling to the ground had frightened it.
But I don’t insist. I don’t mean to defend zoos. Close them all down if you want (and let us hope that what wildlife remains can survive in what is left of the natural world). I know zoos are no longer in people’s good graces. Religion faces the same problem. Certain illusions about freedom plague them both.