Trolls is a tremendous growth and strength, but still they were ugly and understands extremely tight.
Skin of them was thick and rough, blood was black; any troll, except ologhay, in the sunlight turns to stone.
They upotreblinli to eat raw meat, killed for sport and collected in their dens loot.
Tolkien, recognizing that "the presence of orcs elven blood is very possible," suggested that "they could interbreed with animals (without offspring!) And later with the people.»
The last remark was developed in the form of another hypothesis, which suggested that the orcs perhaps been withdrawn from people, perhaps because druedayn.