The wooded hills are a biome in the Overworld made up of a number of hills and mountains covered by forests. It is mostly covered in green grass, birch, and oak trees. This is not a unique biome anymore as since the 1.18 update it has been made a part of the forest biome.
The wooded hills are a biome that is made up of a large number of hills and mountains that are covered in oak trees, birch trees, and grass blocks. Since v1.18, the wooded hills biome is not considered a standalone biome and is now a part of the forest biome as a whole. This biome receives average precipitation, meaning it sees rain from time to time.
Wooded hills are filled with plenty of hostile, passive, and neutral mobs. Hostile mobs such as zombies, skeletons, creepers, zombies, endermen, slimes, and zombie villagers can be found across the wooded hills biomes. Passive and neutral mobs that spawn include sheep, cows, pigs, chickens, and wolves.
The wooded hills are a part of the forest biome that is quite useful for players as it houses a lot of resources and mobs that can be used by the players for various purposes. They are also one of the few places where you can wind wild wolves. Wooded hills are of multiple types but only two variants. The different types are oak, birch, spruce, etc., this is dictated by the type of tree that the forest is filled with.
A. Yes, wolves can also be found in wooded hills.
A. Wooded are not rare at all, they are in fact quite common as the forest biomes are very easy to come across.