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THE COLD-BLOODED COHORT
Dear Mr Durrell,
At a garden fete the other day a lizard was found in the ice-cream container…
I know that it is a confession of acute and depraved eccentricity, but nevertheless I must admit that I am fond of reptiles. They are not, I grant you, overburdened with intelligence. You do not get the same reaction from them that you would from a mammal, or even a bird, but still I like them. They are bizarre, colourful, and in many cases graceful, so what more could you want?
Now, the majority of people will confess to you (as though it were something quite unique) that they have an ‘instinctive’ loathing for snakes, and with much eye-rolling and grimacing they will give you many reasons for their fear, ranging from the sublime (’It’s instinctive’) to the ridiculous (’They’re all sort of slimy’). I have been, at one time or another, bored by so many snake-complex admissions that as soon as the subject of reptiles crops up in conversation with anyone I want to run away and hide. Ask the average person his views on snakes and he will, within the space of ten minutes, talk more nonsense than a brace of politicians.
To begin with, it is not ‘natural’ for human beings to fear snakes. You might just as well say that they are naturally afraid of being run over by a bus. Most people, however, are convinced they are born with a built-in anti-snake feeling. This can be quite simply disproved by handing a harmless snake to a child who is too young to have had its head filled with a lot of nonsense about these creatures; the child will hold the reptile and play with it quite happily and without a trace of fear. I remember once putting this point to a woman who had been gurgling on about her snake phobia for what seemed like years. She was most indignant. “I’ve never been taught to fear snakes, I’ve always been like that,” she said haughtily, and then added in triumph, “and my mother was like that, too.” Faced with such logic, what could one reply?
People’s fears of snakes seem to be based on a series of misconceptions. The most common one is the conviction that all these creatures are poisonous. In actual fact, the non-poisonous ones outnumber the poisonous ones by about ten to one. Another popular idea is that these reptiles are slimy to touch, whereas snakes are dry and cold, and feel no different from a pair of snakeskin shoes or a crocodile-skin handbag. Yet people will insist that they cannot touch a snake because of its sliminess, and think nothing of handling a wet cake of soap.
Our reptile house is fairly small, but we have a pretty good cross-section of reptiles and amphibia on show. I derive a lot of innocent amusement out of going in there when it is crowded and listening to the general public airing its ignorance with an assurance that is breathtaking. For instance, the snake’s tongue: this is purely a scent organ with which the creature smells, hence the way it is flicked rapidly in and out of the mouth; it is also used as a feeler, in the same way that a cat uses its whiskers. The snake experts, however, who visit the reptile house know better. “Cor, Em,” someone will shout excitedly, “come and look at this snake’s sting… Coo, wouldn’t like to be stung by that!” And Em will hurry over and peer horrified at the innocent grass snake, and then give a delicious shudder. All reptiles can, of course, spend long periods completely immobile, when even their breathing is difficult to detect, unless you look closely. The classic remark was delivered by a man who, having peered into several cages in which the reptiles lay unmoving, turned to his wife with an air of one who has been swindled, and hissed, “They’re stuffed, Milly.”
A snake moving along the ground or through the branches of a tree is one of the most graceful sights in the world, and when you consider that the creature is walking with its ribs the whole thing becomes even more remarkable. If you watch a moving snake carefully, you can sometimes see the ribs moving beneath the skin as the snake draws itself along. The creature’s unblinking stare (another thing to which people object) is due not to the fact that the snake is trying to hypnotize you, but simply to its having no eyelids. The eye is covered with a fine, transparent scale, like a watch-glass. This is very clearly noticed when a snake sheds its skin, which they all do periodically. The skin comes loose around the lips, and then, by rubbing itself against rocks or branches, the snake gradually peels it off. If you examine this shed skin, you can see that the eye scales have been shed as well.
All snakes are adapted for feeding in the same way, but their methods of obtaining their food vary. The non-poisonous ones and the constrictors (such as the pythons) grab their prey with their mouths, and then try to throw two or three coils of their body round the victim as rapidly as possible, thus holding and crushing at the same time. The poisonous ones, on the other hand, bite and then wait for the poison to take effect, which is generally very soon. Once the prey has undergone its last convulsions, it can be eaten. The poison fangs, of course, are in the upper jaw, and usually near the front of the mouth. When not in use, they fold back against the gum, like the blade of a penknife; as the snake opens its mouth to strike, they drop down into position. The fangs are hollow, like a hypodermic needle, or else they have a deep groove running down the back. The poison sac, to which they are connected, lies above the gum. As the snake bites, the poison is forced out and trickles down the groove or hollow in the fang and so into the wound. However, whatever the method of attack, once the prey is dead, the swallowing process is the same in all snakes. The lower jaw is jointed to the upper one in such a way that it can be dislocated at will, and, of course, the skin of the mouth, throat, and body is extremely elastic, so the snake can swallow a creature considerably larger than its own head. Once the food is in the stomach, the slow process of digestion starts. Any portions of the animal that are impossible to assimilate, such as hair, are regurgitated in the form of pellets at a later date. On one occasion a large python was killed, and in its stomach were found four round balls of hair, the size of tennis balls and very hard. On being cut open, each one was found to contain the hoof of a wild pig. These sharp hooves could have damaged the lining of the python’s stomach, and so each one had been carefully covered with a thick, smooth layer of hair.
In the majority of zoos nowadays dead creatures are fed to the snakes. This is not because it is better for the snakes, or that they prefer it, but simply because of misplaced kindness on the part of the general public, who imagine that a white rat or a rabbit suffers terribly when put into a cage with a snake. That this is nonsense I have proved to my complete satisfaction, for I have seen, in a Continental zoo, a rabbit perched on the back of a python (obviously not hungry), cleaning its whiskers with tremendous sang-froid. The director of the zoo told me that when white rats were given to the snakes, it was imperative that they should be removed if they were not eaten straight away; otherwise they proceeded to gnaw holes in the snake’s body.