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The desert tortoise (Gopherus agassizii) ... Although desert tortoises can survive body temperatures from below freezing to over 40 °C (104 °F), most activity ...
Several lineages of tortoises have independently evolved very large body sizes in excess of 100 kilograms (220 lb), including the Galapagos giant tortoise and the Aldabra giant tortoise. They are usually diurnal animals with tendencies to be crepuscular depending on the ambient temperatures.
The Aldabra giant tortoise weighs up to some 60 kilograms (130 lb) and is able to allow its temperature to rise to some 33 °C (91 °F) on a hot day, and to fall naturally to around 29 °C (84 °F) by night. Some giant tortoises seek out shade to avoid overheating on sunny days.
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).
The African spurred tortoise (Centrochelys sulcata), also called the sulcata tortoise, is an endangered species of tortoise inhabiting the southern edge of the Sahara Desert, the Sahel, in Africa. It is the largest mainland species of tortoise in Africa, and the third-largest in the world, after the Galapagos tortoise and Aldabra giant tortoise.
The marginated tortoise lives in more mountainous regions than Hermann's tortoise. It can be found in elevations as high as 1,600 m (5,200 ft). The black color of the carapace is helpful for survival in this environment, as it allows the tortoise to absorb a great deal of heat in a short time, helping it maintain its body temperature. Early in ...
The leopard tortoise is the fourth-largest species of tortoise in the world, with typical adults reaching 40 cm (16 in) and weighing 13 kg (29 lb). Adults tend to be larger in the northern and southern ends of their range, where typical specimens weigh up to 20 kg (44 lb), and an exceptionally large tortoise may reach 70 cm (28 in) and weigh 40 ...
The angulate tortoise (Chersina angulata) is a species of tortoise found in dry areas and coastal scrub vegetation in South Africa. It is the only living member of the genus Chersina . 1830s illustration, under the synonym " Testudo angulata "