pointed, narrow, roundish snouts, but their teeth are nearly equal-sized and even. The alligators, on the contrary, have broad pike-shaped noses, with teeth very unequal, and one large one on each side of the lower jaw, that, when the mouth shuts, passes – not into a groove as with the crocodile – but, into a hole or socket in the upper jaw. These are Monsieur Cuvier’s distinctions; which he takes a world of pains to point out and prove. He might, in my opinion, have spared himself the trouble, as there are so few varieties of the animal in existence, that they might have been treated of with greater simplicity as so many species of the genus ‘crocodile.’
“Of the true crocodiles there are five species known. Four of these are found in the rivers of Africa, while the fifth is an inhabitant of the West Indies and South America. The gavial is found in Asia – particularly in the Ganges and other Indian rivers, and is the crocodile of those parts. The alligator belongs to America, where it is distributed extensively both in North and South America. In the Spanish parts it is called ‘caïman,’ and there are two species well-known, viz the spectacled caïman of Guiana, and the alligator of the Mississippi. No doubt, when the great rivers of South America have been properly explored, it will come to light, that there are other varieties than these. I have heard of a species that inhabits the Lake Valencia in Venezuela, and which differs from both the American species mentioned. It is smaller than either, and is much sought after by the Indians for its flesh, which these people eat, and of which they are particularly fond. It is probable, too, that new species of crocodiles may yet be found in Africa and the islands of the Indian Ocean.
“Now I think it is a well-ascertained fact, that all these varieties of the crocodile family have pretty much the same habits, – differing only where such difference might be expected by reason of climate, food, or other circumstances. What I shall tell you of the alligator, then, will apply in a general way to all his scaly cousins. You know his colour, – dusky-brown above, and dirty yellowish-white underneath. You know that he is covered all over with scales, and you see that on his back these scales rise into protuberances like little pyramids, and that a row of them along the upper edge of his tail give it a notched, saw-like appearance. You notice that the tail is flattened vertically, and not like the tail of the beaver, which is compressed horizontally. You observe that the legs are short and very muscular – that there are five toes on the fore-feet, slightly webbed or palmated, and four on the hind-feet much longer and much more webbed. You notice that his head is somewhat like that of a pike, that the nostrils are near the end of the snout, the eyes prominent, and the opening of the ears just behind them. His eyes have dark pupils, with a lemon-coloured iris; and the pupils are not round, as in the eye of a man, but of an oval shape, something like those of a goat.
“All these things you may observe by looking at an alligator. But there are some things about the structure of the animal which are peculiar, and which may not strike you so readily. You observe that his jaws open far back – even beyond the ears – where they are hinged or articulated into each other. Now this is a peculiar formation, and the effect is, that when the alligator opens his mouth, his neck becomes somewhat bent upwards, giving him the appearance of having moved the upper instead of the under jaw.”
“Why I have often heard that that was so,” remarked François.
“Many have thought so, and said so, since the time of Herodotus, who first propagated this absurd idea. It is not the fact, however. It is the lower jaw that moves, as in other vertebrated animals; but the appearance I have described leads to the mistake that has been made by careless observers. There is another point worth speaking of. The opening of the alligator’s ear is guarded by a pair of lips, which he closes the moment he goes under water. His nostrils, too, are protected by valves, which he can also close at will. There is also a peculiarity about his vertebrae. These are so jointed to each other, that he cannot turn without describing a circle with his body. He can move his head but slightly to one side or the other; and this is a fortunate circumstance, if not for him, at least for his enemies. Were he able to turn short round, or twist himself about, as serpents do, he would be a most dangerous creature to encounter. As it is, the great length of his body, combined with the shortness of his legs and the impossibility of his getting round quickly, renders him an easy antagonist on land, provided you keep out of reach of his great jaws, and beyond the sweep of his powerful tail. This last is his true weapon of offence or defence; and as it is not restrained by any vertebrae, he can use it with such effect as to knock the breath out of a man with one single flap. Many of the habits of the alligator are known to you. How the female lays eggs as big as those of a goose, and buries them in the sand, where they are hatched by the heat of the sun. Sometimes she cannot find a sandbank to suit her purpose. She then raises a circular platform of mud mixed with grass and sticks. Upon this she deposits a layer of eggs, and covers them over with several inches of mud and grass. She then lays a fresh tier of eggs, covering these also with mud, and so on until she has laid her whole hatching, which often amounts to nearly two hundred eggs, of a dirty greenish-white colour. In the end she covers all up with mud, plastering it with her tail until it assumes the appearance of a mud oven or beaver-house. All these pains she takes to protect her eggs from raccoons and turtles, as well as vultures and other birds, that are very fond of them. She haunts near the spot while the eggs are hatching, so as to keep off these enemies. When the young are out, her first care is to get them to the water out of the way of such dangers. This seems to be their first instinct, too; for no sooner are they free from the shell than they are seen scuttling off in that direction, or following their mother, many of them having climbed upon her back and shoulders.”
“But, brother,” interrupted François, “is it true that the old males eat their own young?”
“Horrible though it be, it is perfectly true, François. I myself have seen it.”
“And I,” said Basil, “several times.”
“The first care of the mother is to get them to the water, where she can better conceal them from their unnatural parent; but, notwithstanding all her precautions, many of them fall victims, both to the old alligators, and the larger tortoises, and birds. As soon as the young ones have learned a little sense, if I may so speak, they elude their monster fathers and uncles, as they are nimbler in their movements, and can keep out of reach of their great jaws and tails. I have often seen the small alligators riding upon the backs of the larger ones, knowing that the latter could not reach them in that situation.”
“They appear to eat anything that comes in their way,” remarked François.
“They are not very particular as to that. Fish is their favourite food, I believe, but they will eat any land animal they can kill; and it is believed they prefer it in a state of putrefaction. That is a doubtful point. They have been known to kill large animals in the water, and leave them at the bottom for several days; but this may have happened because they were not hungry at the time, and were merely keeping them until they should get an appetite. The process of digestion with them, as with all reptiles, is very slow; hence they do not require such quantities of food as the warm-blooded animals – mammals and birds. For instance, they bury themselves in the mud, and lie asleep during the whole winter without any food.”
“You say fish is their favourite food, Luce,” said Basil; “now I think they are fonder of dogs than anything else. I have often known them to come where they had heard the yelping of a dog as if for the purpose of devouring it. I have seen one seize a large dog that was swimming across the Bayou Boeuf, and drag him under, as quick as a trout would have taken a fly. The dog was never seen again.”
“It is very true,” replied Lucien, “that they will eat dogs, as they will any other animals; but their being particularly fond of them is a point about which naturalists differ. It is true they will approach the spot where they hear the yelping of a dog; but some say that this is because it so much resembles the whining of their own young, and that it is these they are in search of.”
“But I have seen both the males and females make towards the dog.”
“Just
