Anthropoid
There is no known creature called a "pickosaurus" in real life. It may be a made-up or fictional creature.
A swordfish's sword is called a bill. It is a long, flat extension of its upper jaw that resembles a sword.
The pulmonary system resembles the braches of a tree. It's sometimes called the pulmonary tree.
A bacteria moves using a structure called the flagellum, which resembles a tail.
A shape with a hole in it is called a "torus." It resembles a donut-shaped figure, with a hole in the middle that runs through the center.
The creature that resembles a snake but has tiny legs like a lizard is called a legless lizard.
The mythological creature was called a centaur
The Sea Horse.
An alligatoroid is a form of extinct crocodile-like creature of the superfamily Alligatoroidea.
Slender man
A hexatauroid is a being or creature that resembles a hexataur (six-legged centaur).
If it resembles an existing creature and has the same rules then usually yes. But you cannot create a whole new creature with different rules.
There is no creature called an 'Emmet'. However, in the Twilight saga series, there is a chracter called Emmett Cullen, who is not a human, but a vampire, making him a different type of creature to the other humans. Oh yes, there is a creature in the real world called an 'emmet'. It resembles a large ant.
Kabouter is a Dutch word for a leprechaun or gnome. It is a mythical creature that resembles a shy, tiny man with a beard and pointy red hat, and is said to live in mushrooms or underground. Kabouters are also said to be spirits who help in domestic affairs.
Mermaids or Mermen
You are probably thinking of Frankenstein- but that is wrong. In her book, Frankenstein was the man that created a creature from the parts of dead people- the creature never HAD a name.
I think you're referring to the mythical half-man - half-goat creature called Pan.