How big is the smallest animal? 10

Of the world's smallest animals, there's always one you don't know.

It's as small as you want.

Pygmy marmosets, pygmy octopus, brucelli lizards, bruce lizards, spotted hawksbill turtles.

1. The pygmy marmoset, found in the rainforests of South America, is the smallest monkey in the world. Adults are only 16 centimeters long (not including the tail) and can easily fit into the palm of your hand, while their tail is more than 30 centimeters long, and unlike other monkeys, this tail is mainly used for balancing, they are typically monogamous and lifelong companions.

2. The dwarf octopus, this octopus is by far the smallest known octopus in the world. The adult octopus weighs less than a gram and is only centimeters long, meaning it can comfortably cling to one of your fingers and is found in both the Indian and Pacific Oceans.

3. The brusseli lizard, this lizard was discovered in Madagascar in 2012, in fact, it is a small chameleon, most of the time under the deciduous layer, so it is extremely difficult to find, but at night, they will climb on the branches of trees to sleep, this is the best time to look for them, and at the moment this is the smallest lizard species found in the world.

4. Hognose bats, also called bumblebee bats, can be found in Thailand and Myanmar. They can grow up to about 33 mm long, which is currently the smallest mammal. They live in groups, numbering between 10 and 500 bats per group, and feed several times a day, mainly insects.

Unlike most other bats, they do not use echolocation, and they are currently in danger of extinction.

5. Spotted hawksbill turtles, which can reach up to 110 mm in size, their spotted shells help them hide from predators in the rocks, and they spend most of their time hiding in the rocks. Due to their small size, females can only lay one egg at a time, and they are now critically endangered due to poaching, predators, habitat loss, and more.

The blue whale, a marine mammal, belongs to the suborder Baleen Whales. There are four subspecies of Solana spp. The blue whale is believed to be the largest animal known to have ever survived on Earth, reaching up to 33 meters long and weighing up to 181 tons.

The blue whale has a slender body and a blue-gray back, although it can sometimes be lighter in the water.

The blue whale is not only the largest cetacean, but also larger than the largest dinosaur ever lived on Earth, and is the largest of all animals known since ancient times, with a general body length of 2,400 to 3,400 centimeters and a weight of 150,000 to 200,000 kilograms, which is equivalent to the weight of more than 25 African elephants, or the weight of 2,000 to 3,000 human beings.

I think rats are the smallest animals.