REPTILES of GOR

Crocodile
In the pool, clambering over one another, lifting their jaws upward were crocodiles, beasts like river tharlarion but differently hided and plated. [Explorers of Gor p326]

Hith
In another case, somnolent and swollen, I saw a rare golden hith, a Gorean python whose body, even when unfed, it would be difficult for a full-grown man to encircle with his arms. [Priest Kings of Gor p191]
In one cage, restlessly lifting its swaying head, there coiled a great, banded horned hith, Gor's most feared serpentine constrictor. It was native only to certain areas of the forests. [Captive of Gor p210]

Ost
The banded ost is a variety of ost, a small, customarily brilliantly orange Gorean reptile. It is exceedingly poisonous. The banded ost is yellowish orange and is marked with black rings. [Assassin of Gor p335]
The ost is usually an orange snake, but these were Ushindi osts, which are red with black stripes. Anatomically, and with respect to toxin, I am told they are almost identical to the common ost. [Explorers of Gor p311]

Salamander
Among the lelts, too, were, here and there, tiny salamanders, they, too, white and blind. Like the lelts, they were, for their size, long-bodied, were capable of long periods of dormancy and posessed a slow metabolism, useful in an environment in which food is not plentiful. Unlike the lelts, they had long stemlike legs. [Tribesmen of Gor p247]

Tharlarion
Rather our mounts were typical of the breeds from which are extracted racing tharlarion, of the sort used, for example, in the Vennan races. To be sure, it is only select varieties of such breeds, such as the Venetzia, Torarii and Thalonian, which are commonly used for the racers. As one might suppose, the blood lines of the racers are carefully kept and registered, as are, incidentally, those of many other sorts of expensive bred animals, such as tarsks, sleen and verr. This remark also holds for a certain variety of of expensive bred slaves, the prize crops of the slave farms. [Magicians of Gor p290]
The tarn is one of the two most common mounts of a Gorean warrior; the other is the high tharlarion, a species of saddle-lizard, used mostly by clans who have never mastered tarns. [Tarnsman of Gor p52]
Scarcely had she broken into the clearing, splashing through the shallow greenish waters near us, than the fearsome head of a wild tharlarion poked through the reeds, its round, shining eyes gleaming with excitement, its vast arc of a mouth swung open.
[Tarnsman of Gor p84]
He rode the species of tharlarion called the high tharlarion, which ran on its two back feet in great bounding strides. Its cavernous mouth was lined with long, gleaming teeth. Its two small, ridiculously disproportionate forelegs dangled absurdly in front of its body.
[Tarnsman of Gor p115]
Behind them, stretching into the distance, came a long line of broad tharlarions, or the four-footed draft monsters of Gor. These beasts, yoked in braces, were drawing mighty wagons, filled with merchandise protected under the lashings of its red rain-canvas.
[Tarnsman of Gor p118]
It would probably be a sea-tharlarion, or perhaps several such; sometimes the smaller sea-tharlarion, seemingly not much more than teeth and tail, fluttering in packs beneath the waves, are even more to be feared than their larger brethern, some of whom in whose jaws an entire galley can be raised from the surface of the sea and snapped in two like a handful of dried reeds of the rence plant. [Nomads of Gor p204]
My leg slipped from the island into the water and suddenly a tiny tharlarion struck it, seizing his bit of flesh and backing, tail whipping, away. My leg was out of the water, but now the water seemed yellow with the flashing bodies of tiny tharlarion, and beyond them, I heard the hoarse grunting of the great marsh tharlarion, some of which grow to be more than thirty feet in length, weighing more than half a hundred men. [Raiders of Gor p58]
A broad, low-sided barge began to back toward the pier. It had two large steering oars, manned by bargemen. It was drawn by two gigantic, web-footed river tharlarion. These were the first tharlarion that I had ever seen. They frightened me. They were scaled, vast and long-necked. Yet in the water it seemed, for all their bulk, they moved delicately. One dipped its head under the surface and, moments later, the head emerged, dripping, the eyes blinking, a silverish fish struggling in the small, triangular-toothed jaws. It engorged the fish, and turned its small head, eyes now unblinking, to regard us. They were harnessed to the broad barge. They were controlled by a bargeman, with a long whipping stick, who was ensconced in a leather basket, part of the harness, slung between the two animals.
[Captive of Gor p80]
There were other barges on the river, some moving across the river, others coming toward Laura, others departing. Those departing used only the current. Those approaching were drawn by land tharlarion, plodding on log roads along the edges of the river. The land tharlarion can swim barges across the river, but he is not as efficient as the vast river tharlarion. [Captive of Gor p81]
The tiny, six-toed rock tharlarion of southern Torvaldsland, favored for their legs and tails, which are speared by children. [Marauders of Gor p152]
I looked at the tiny lamp on the shelf near the door. It smoked, and burned oil, probably from tiny rock tharlarions, abundant south of Tor in the spring. [Tribesmen of Gor p222]
The marsh tharlarion, and river tharlarion, of Gor are, I suspect, genetically different from the alligators, caymens and crocodiles of Earth. I suspect this to be the case because these Earth reptiles are so well adapted to their environments that they have changed very little in tens of millions of years. The marsh and river tharlarion, accordingly, if descended from such beasts, brought long ago to Gor on Voyages of Acquisition by Priest-Kings, would presumably resemble them more closely. On the other hand, of course, I may be mistaken in this matter. It remains my speculation, however, that the resemblance between these forms of beasts, which are considerable, particularly in bodily configuration and disposition, may be accounted for by convergent evolution; this process, alert to the exigencies of survival, has, I suspect, in the context of similar environments, similarly shaped these oviparous predators of two worlds. [Explorers of Gor p326]
The word ‘Mamba’ in most of the river dialects does not refer to a venomous reptile as might be expected, given its meaning in English, but, interestingly, is applied rather generally to most types of predatory river tharlarion. The Mamba people were, so to speak, the Tharlarion people. The Mamba people ate human flesh. So, too, does the tharlarion. It is thus, doubtless, that the people obtained their name. [Explorers of Gor p393]

Ul
Also, at night, crossing the bright disks of Gor's three moons, might ocassionally be seen the silent, predatory shadow of the ul, a giant pterodactyl ranging far from its native swamps in the delta of the Vosk. [Outlaw of Gor p26]
I had then heard a repetition of that piteous, lengthy scream. I had also seen then, as I had come closer, the small head of the creature, small considering the size of its body, and the span of its wings, lift up, above the rence, with its long narrow, toothed jaws, like a long snout or bill, with that long, narrow extension of skin and bone in the back, balancing the weight of the long, narrow jaws, contributing, too, given the creature's weight and general ungainliness in structure, to stability in flight, particularly in soaring. It had emerged from the rence. The creature had turned to regard me. It had opened its wings, suddenly. Their span must have been twenty-five to thirty foot Gorean. Then it closed them, folding them back, against its body. I was quite impressed with it. Never had I been so close to such a thing before. It uttered a hissing, grunting sound, expelling air from its lungs. It had a long, snakelike tail, terminating with a flat, spadelike structure. This tail lashed, the spadelike structure dashing sand about. This tail, with its termination, too, I think, had its role to play in flight, primarily one of increasing stability. Again it opened its wings. These are of skin and stretch from the jointed, hind legs, clawed, of the creature to an extremely long, fourth digit on its clawed hand. [Vagabonds of Gor p179]

Turtle
To my right, some two or three feet under th e water, I saw the sudden, rolling yellowish flash of the slatted belly of a water tharlarion, turning as it made its swift strike, probably a Vosk carp or marsh turtle. [Raiders of Gor p1]
It might, too, be a Vosk turtle. Some of them are gigantic, almost impossible to kill, persistent, carnivorous. Yet, if it had been a tharlarion or a Vosk turtle, it might well have broken the surface for air. It did not. [Nomads of Gor p204]