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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).
Vertebrates are animals with a backbone (examples: humans, snakes,  birds). They give birth alive and sometimes hatched    Invertebrates are animals without a backbone â¦ (examples: snails,  starfish, worms).Invertebrates have no bones at all that they can  move by using tentacles.Vertebrates: animals with backbone are called vertebrates.ertebrate means to have a spinal column or backbone. All mammals are vertebrates. All corals, insects, worms, jellyfish, snails and starfish are inverte â¦ brates because they have no backbone.