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An Aldabra giant tortoise, an example of a giant tortoise.. Giant tortoises are any of several species of various large land tortoises, which include a number of extinct species, [1] as well as two extant species with multiple subspecies formerly common on the islands of the western Indian Ocean and on the Galápagos Islands.
The Galápagos tortoise or Galápagos giant tortoise (Chelonoidis niger) is a very large species of tortoise in the genus Chelonoidis (which also contains three smaller species from mainland South America). The species comprises 15 subspecies (13 extant and 2 extinct). It is the largest living species of tortoise, and can weigh up to 417 kg ...
The Aldabra giant tortoise (Aldabrachelys gigantea) is a species of tortoise in the family Testudinidae and genus Aldabrachelys. The species is endemic to the Seychelles , with the nominate subspecies , A. g. gigantea native to Aldabra atoll.
Scientists have reported that a rare species of giant tortoise thought to have died out more than a century ago is not in fact extinct. Genetic research has shown that a female specimen discovered ...
The Santiago Island giant tortoise (Chelonoidis niger darwini), also known commonly as the Santiago giant tortoise [3] and the James Island tortoise, is a subspecies of Galápagos tortoise in the family Testudinidae. The subspecies is endemic to Santiago Island (also known as James Island and San Salvador) in the Galápagos.
Naula suspects that the cause of death was heart failure consistent with the end of the natural life of a tortoise. [28] Giant tortoises are among the longest-lived vertebrate animals (more than 100 years by some estimates) and have been used as a model for providing insight into longevity. [28]
Chelonoidis niger chathamensis, commonly known as the Chatham Island giant tortoise or the San Cristóbal giant tortoise, is a subspecies of Galápagos tortoise endemic to San Cristóbal Island in the Galápagos.
Like other species of tortoise, the Seychelles giant tortoise is not strictly herbivorous. There have been anecdotal reports of tortoises consuming birds, crabs, and bones. In 2021, a female tortoise on Frégate Island was recorded deliberately hunting, killing, and eating a noddy tern chick. [4]