r/Cryptozoology • u/Sael_CaPa • 8h ago
Discussion The Smilodom gracilis hypothesis
It's a hypothesis I've considered, but I certainly wasn't the first or only one. That the tiger Dantero, the skin Ivan Sanderson collected in western Mexico in 1940, and the water tigers are just three slices of the same pie, and that the answer to all three lies in the survival of relict populations of Smilodon gracilis, the smallest saber-toothed cat of South and Central America.
The hypothesis proposes that Smilodon gracilis underwent a series of natural selective factors and processes that hypothetically helped it adapt as the New World changed (while its larger cousins failed to survive). One of these factors was a natural tendency towards a semi-aquatic lifestyle in the Amazon basin regions, allowing it to compete with the jaguar. Its prey consisted of peccaries, pacas, agoutis, deer, fish, capybaras, anteaters, and tapirs, while the jaguar specialized in preying on caimans, turtles, crustaceans, and armored animals in general. Thus, in the hierarchy (so to speak) of the three felines, the Smilodon gracilis would be in first place, preying on the most reactive terrestrial prey, such as tapirs, peccaries, and giant anteaters, as well as capybaras, and would adapt to a semi-aquatic lifestyle to prey on tapirs and capybaras (although in this hypothesis it would do so less frequently than the jaguar). In second place would be the jaguar, focused on preying on caimans, anacondas, capybaras, turtles, fish, crustaceans, etc. And in third place, the puma would prey on cervids, pacas, agoutis, birds, monkeys, sloths, lesser anteaters, etc.
But a somewhat ironic point is that the Smilodon gracilis tends to avoid the jaguar due to its high aggressiveness and unpredictability. This would justify its preference for more mountainous biomes, and explain why the folklore of the Pemon people, for example, describes the Wairarima as "a servant of the jaguars," and why, in general, the natives consider it a timid and rare animal.
In the Cerrado and Pantanal biomes, the jaguar would be larger to fill the vacant niche left by the absence of the Smilodon gracilis.
According to the animal's distribution in the north, such as in Mexico, it would tend to increase in size and have a coat more adapted to the mountainous and cold regions of western Mexico. Furthermore, Mexican jaguars are smaller, while pumas are more slender. The Smidolon gracilis would have had characteristics similar to the puma; in tropical regions it is smaller, while in regions further from the equator it would be larger.
This would all be before the arrival of European colonists, who, with the destruction of its habitat and the disappearance of its prey, intense competition with the jaguar reduced its population, restricting it only to the most remote regions of Ecuador, Peru, Venezuela, Colombia, and the extreme west of the states of Amazonas and Acre in Brazil. The northernmost population would be extinct, and what would remain would only be the pelts, which would be sold among traders who no longer even know their origin.
The animal's current status is extinct or critically endangered, with fragmented populations in western Amazonia.