I think it is called a tribe. Not sure.
A mythical creature that is half horse and half human is called a centaur. In Greek mythology, centaurs are known for their strength and wild nature, often depicted as living in forests and engaging in battles.
Ken-Tauros means slay[er] [of] bull[s] in Ancient Greek. The sagittary or archer centaur was a formidable hunter and warrior. The etymology is disputed, however. Kenos means 'empty' as used in English for cenotaph. If you wish to think of the centaur as empty bull, I can't stop you. The Sicilian Greek, Empedocles, apparently wrote of the possibility of the bull-bodied man-faced counterpart of the minotaur. He may have known of the Lamassu bull-sphinx - a Babylonian protective demon.
A group of shrews is called N.O.W.
A group of Spiders is called a cluster or clutter. Spiders belong to the group of animals called arachnids.
A group of swine is called a sounder or drift
I think you might be thinking of a hippocamp. http://en.wikipedia.org/wiki/Hippocamp
Chiron
A Centaur.
There is no fantasy creature that is half horse half human and NOT called a centaur.
It is called a centaur. If the upper half is human with the lower half horse and the horse section has all four horse legs, it is indeed a centaur. If it has the upper half of a human with the lower half of a horse but only 2 legs like a satyr it is a Sileni. There are also horse-headed men but I can not find the names for them. There is also the deity Hayagriva in Hinduism and Buddhism that has a white horse's head and a human body and is pictured as seated on a lotus.
it is a centaurs
Centaur is a mythical creature with head, arms and torso of a man and body and legs of a horse. In Latin it is called Tatem.
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The species are incompatible and cannot interbreed.
A creature with the body of a horse and torso of a person is a centaur.
In "A Midsummer Night's Dream," the character who briefly transformed into a donkey is Bottom, not a centaur. Bottom is a member of the amateur acting group rehearsing a play for the Duke's wedding.
A monocular centaur.