There have been sightings of a variety of small humanoid
forms since antiquity.
Sightings

The Dover Demon
This is a well documented 'one off' sighting of a small,
peach colored humanoid that was seen in Dover, Massachusetts in April 1977. It has become
known as the 'Dover Demon'.
The creature had a large head with two large orange eyes.
No one saw any trace of ears, mouth or nose. It stood around 1 to 1.3 m tall and had
very thin limbs. The skin was rough and without hair.
It was sighted three times that one night by three groups
of people. All of the witnesses were teenagers. One person
went so much as to follow the 'demon' into the woods, mistaking it for someone he knew!
The drawings made of the 'demon' by several of the
witnesses were amazingly close in detail, and invetigators are quite certain that this
wasn't a hoax.
Was it an alien, a sick animal or perhaps a unknown animal
lurking about?