The world’s biggest tortoise is The Galapagos Tortoise. The big tortoise lives on the Galapagos Islands. The island name is comes from the tortoises, in Spanish Galapagos means saddleback that is a explanation of the tortoise’s large shell. There are some varieties of the tortoise, one in particular is identify the saddleback, and its shell has several ridges on top, which create it show extra like a saddle than some of the others. This species has the longest neck of all the genus also.
The big Galápagos tortoise is the largest alive genus of tortoise. Galápagos tortoise is the 10th-heaviest living reptile in the world. The weight of this kind tortoise is more than 400 kg [880 lb (weight of two male African lions)] and lengths of more than 6 ft. The biggest tortoise life period is more than 100 years, and it is one of the longest-lived creatures. An imprisoned individual be alive as a minimum of 170 years. A Galapagos tortoise can therefore be said to be alive for nine human age group.
The tortoises have a big scrawny shell of a dry brown color. The hard shell is attached with the ribs in a stiff defensive structure, which is essential to the skeleton. These tortoises can take inside its head, neck, and forelimbs into its shell for defense. The legs are big, stumpy, with dry rough pelt, and solid scales. The tortoise front legs have 5 claws, and the rear legs 4 claws. The tortoises are cold-blooded and so relax for 1 or 2 hours in the sun’s heat. They journey generally in the early on morning or late daylight between resting and scratching zones. Galapagos tortoises can just go for a distance of about 1 kilometer in 4 hours.
The tortoises are generally eat cacti, grasses, leaves, lichens, and berries. They have been recognized to feed on poison apple, the rife guava, the water fern, and the bromeliad. A big tortoise consumes an average of 32–36 kilograms (70–80 lb) for every day; however, incompetent absorption means that a lot of this passes through with no dietary extraction. Tortoises obtain the largest part of their wetness from the dew and juice in plants, so they can expend lengthy time with no drinking water. Tortoise can endure continue 18 months when disadvantaged of all food and water, in this time they flouting down fat of their body to make water as a by-product. In the thirsty time, when they see water, then they drink huge quantities of water very fast, and they stock up water in their bladders and the source of the neck.
Tortoises are mating each other at any time of the year, even though it does have cyclic peaks between February and June in the moist highlands throughout the showery time. While adult males get together in the mating period they will look each other in a ritualized ascendancy display, they arise on their legs and make bigger their necks with their jaws wide open.
Female tortoises are trip up to quite a few kilometers in July to November to get to nesting spots of dry, sandy beach. Nest digging is an exhausting work and complicated job that can take the female quite a few hours a day more than several days to finish. This tough work is doing by female tortoise using just the hind legs to dig a 30 cm (12 in) deep cylindrical hole. The tortoise lays able to 16 sphere-shaped, tough-shelled eggs and the eggs are weighted from 82 to 157 grams, and the dimension look like of a billiard ball.