What is the slowest animal in the world?

The sloth is the slowest animal in the world because there are no other slowest animal in the world!
Three toed sloth.
it is the three toed sloth
* i think it's the sloth * It is actually the Snail
The three toed sloth. It moves 0.003 Miles Per Hour.
Slug or microbes.
Snails are the slowest insects. Large turtles/tortoises on land are the slowest reptilians.
Ever heard someone called a "sloth" or "slow as a sloth" because they move really slowly? That's because the sloth -- especially the three-toed sloth -- is the slowest animal around. Their legs and feet are shaped to hang from trees, so it's actually hard for sloths to walk on the ground. They can't run or stand upright on their feet. It would take a sloth nearly a month to walk one mile! Sloths don't do much walking on the ground, though -- they spend their lives hanging upside down in trees. They eat, sleep, and even have babies upside down!

ANSWER IS THE SLOTH
the three toed sloth

the snail

Ever heard someone called a "sloth" or "slow as a sloth" because they move really slowly? That's because the sloth -- especially the three-toed sloth -- is the slowest animal around. Their legs and feet are shaped to hang from trees, so it's actually hard for sloths to walk on the ground. They can't run or stand upright on their feet. It would take a sloth nearly a month to walk one mile! Sloths don't do much walking on the ground, though -- they spend their lives hanging upside down in trees. They eat, sleep, and even have babies upside down!