ANIMALS

Animals are multicellular, eukaryotic organisms of the kingdom Animalia (also called Metazoa). Their body plan eventually becomes fixed as they develop, although some undergo a process of metamorphosis later on in their lives. Most animals are motile, meaning they can move spontaneously and independently. All animals must ingest other organisms or their products for sustenance (see Heterotroph).

Most known animal phyla appeared in the fossil record as marine species during the Cambrian explosion, about 542 million years ago. Animals are divided into various sub-groups, some of which are: vertebrates (birds, mammals, amphibians, reptiles, fish); molluscs (clams, oysters, octopuses, squid, snails); arthropods (millipedes, centipedes, insects, spiders, scorpions, crabs, lobsters, shrimp); annelids (earthworms, leeches); sponges; and jellyfish.

Largest Animal Ever 

The Blue Whale

The blue whale (Balaenoptera musculus) is a marinemammal belonging to the suborder of baleen whales. At 30 metres (98 ft) in length and 180 metric tons (200 short tons) or more in weight, it is the largest known animal to have ever existed.

Smallest Animal

Nanoarchaeum equitans

The smallest entity universally recognised to be a living organism (not everyone considers the slightly smaller nanobes to be alive) is Nanoarchaeum equitans. This minuscule microbe was only discovered in 2002, in a hydrothermal vent on the seafloor off the coast of Iceland, and its cells are only 400 nanometres across. In addition, its genome is only 490,885 nucleotide bases long, which makes it the smallest non-viral genome ever sequenced.

Longest Animal

The bootlace worm

The bootlace worm (Lineus longissimus) is one of the longest known animals, with specimens up to 55 metres (180 ft) long and up to 10 centimetres (3.9 in) wide being reported. Its mucus is toxic. Taxonomy[edit] The bootlace worm is in the phylum Nemertea or ribbon worms.

Immortal Animal

Turritopsis dohrnii

Turritopsis dohrnii, the immortal jellyfish, is a species of small jellyfish which is found in the Mediterranean Sea and in the waters of Japan. Turritopsis dohrnii, is able to cheat death, curling into a ball (signaling the end for most species), only to grow from its own shriveled remains into an immature juveniles once more. 

Fastest Animal

The Peregrine Falcon

The Peregrine Falcon is the fastest bird, and the fastest member of the animal kingdom with a speed of 389 km/h (242 mph).The peregrine falcon, also known as the peregrine, and historically as the duck hawk in North America, is a widespread bird of prey in the family Falconidae.

Fearless Animal

Honey badge

The world's most fearless animal. Or so says the Guinness Book of World Records. It's the honey badger, and it's mean! These beasts (Mellivora capensis), who live in Africa and Asia, are in the family Mustelidae along with skunks, weasels, and otters.

Strongest Animal

Dung beetle

A dung beetle is not only the world’s strongest insect but also the strongest animal on the planet compared to body weight. They can pull 1,141 times their own body weight. This is the equivalent of an average person pulling six double-decker buses full of people.

Largest Toothed Animal

Prehistoric shark

This prehistoric shark was the largest that has ever lived.  Their teeth have been found and recorded at over 7 inches long!

Sharpest Hearing Animal

Moth

A humble moth has been identified as having the sharpest hearing in the animal kingdom - up to 150 times more sensitive than a human's.It is capable of sensing sound frequencies up to 300 kHz, the highest recorded in any creature in the natural world. 

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