Ents move freely.
Treebeard, the oldest living Ent, is described as being around 14 feet (4 m) tall:
A large Man-like, almost Troll-like, figure, at least fourteen foot high, very sturdy, with a tall head, and hardly any neck. Whether it was clad in stuff like green and grey bark, or whether that was its hide, was difficult to say. At any rate the arms, at a short distance from the trunk, were not wrinkled, but covered with a brown smooth skin. The large feet had seven toes each. The lower part of the long face was covered with a sweeping grey beard, bushy, almost twiggy at the roots, thin and mossy at the ends. But at the moment the hobbits noted little but the eyes. These deep eyes were now surveying them, slow and solemn, but very penetrating.
Ents are an old race that appeared in Middle-earth when the Elves did. They were apparently created by Eru Ilúvatar at the behest of Yavanna: when she learned of Aulë's children, the Dwarves, she foresaw that they would fell trees, and desired creatures to serve as Shepherds of the Trees to protect the forests from Dwarves and other perils. Although the Ents were sentient beings from the time of their awakening, they did not know how to speak until the Elves taught them. Treebeard said that the Elves "cured us of dumbness", that it was a great gift that could not be forgotten. ("They always wished to talk to everything, the old Elves did.") In the Third Age of Middle-earth, the forest of Fangorn was the only place known still to be inhabited by Ents, although the Ent-like Huorns may have survived elsewhere, as in the Old Forest.
Ents exhibit wide variation in personal traits (height, heft, colouring, even the number of digits), as they came to resemble somewhat the specific types of trees that they shepherded. Quickbeam, for example, guarded Rowan trees and bore some resemblance to rowans: tall and slender, smooth-skinned, with ruddy lips and grey-green hair. Ents share some of the strengths and weaknesses of trees as well; their skin is extraordinarily tough, and very much like wood, and they can perform erosion, like that of roots pressing through stone, at an extremely advanced rate, but they are vulnerable to fire and chopping blows from axes. Ents are also an extremely patient race. They are not "hasty", as Treebeard says, for they take their time discussing things. For example, in the Entmoot regarding the attack on Isengard, their three-day deliberation was considered by some to be "hasty".
Ents are tall and very strong, capable of tearing apart rock and stone (though they only use their full strength when they're "roused"). Tolkien describes them as tossing great slabs of stone about, and ripping down the walls of Isengard "like bread-crust". Treebeard boasted of their strength to Merry and Pippin; he said that Ents were much more powerful than Trolls, which Morgoth made in the First Age in mockery of Ents.
We lay out the power of Ents; their bark-like skin and flesh make them difficult to harm even with axes, and a single punch from an Ent (they do not seem to use weapons, though they do hurl stones) can kill an Uruk-hai. The only reliable means to kill an Ent is fire, for they burn easily.
The Sindarin word for Ent is
Onod (plural
Enyd). Sindarin
Onodrim refers to the Ents as a race.
Why dont you know about Ents?