The smallest organisms found on Earth can be determined according to various aspects of organism size.
Including volume, mass, height, length, or genome size.
Here is a list of Smallest Living Animals in The World.
Smallest Monkey
The pygmy marmoset is one of the world’s smallest monkey breeds. Grown ones weigh only 4 oz. to 5 oz. and grow to be a mere 6 in. long. They live in the Amazon rainforest. Where they do charming things like leap between trees and eat insects and tree sap. Pygmy marmosets have sharp teeth and claws. But they are relatively docile and a favorite in the exotic-pet trade.
Smallest Horse
Miniature horses found in many nations, particularly in Europe and the Americas. The miniature horse is usually less than 34–38 inches.
Smallest Bird
The Bee Hummingbird is a species of hummingbird. With a mass of approximately 1.6–2 g and a length of 5–6 cm.It is the smallest living bird.
