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Giant Tortoise â The giant tortoise is the worldâs slowest reptile and one of the slowest animals in the world. But with a life span of 190 years, heâs not in a rush. And besides, youâd move slow too if you weigh as much as 300 kg (660 lbs). Slowest Animals In The World: Giant Tortoise (source: wiki).5. Koala Bear â The Koala bears are native to Australia, and like the sloths â they are both very cute and very slow.iant Tortoise â The giant tortoise is the worldâs slowest reptile and one of the slowest animals in the world. But with a life span of 190 years, heâs not in a rush. And besides, youâd move slow too if you weigh as much as 300 kg (660 lbs). Slowest Animals In The World: Giant Tortoise (source: wiki).
The sloth got its name from its slow movement, it is not lazy, just slow-moving. The sloth is the slowest mammal on Earth. In total, there are six species of sloth. Sloths belong to the families âMegalonychidaeâ and âBradypodidaeâ, part of the order âPilosaâ. Most scientists call these two families the âFolivoraâ suborder, while some call it âPhyllophagaâ.