"Tut, tut - hardly any of you remembered that my favorite color is lilac. I say so in Year with the Yeti"
-- Gilderoy Lockhart (CS6)
The Yeti is a tall, white-furred humanoid creature, possibly related to trolls.
- Yeti were discussed in Harry's second-year Defense Against the Dark Arts class (CS10), as one of Lockhart's books was Year with the Yeti.
- Yetis grow up to fifteen feet tall, and will attempt to attack and eat any human (or just about anything else, for that matter), so it is extremely difficult to study them up close. The Yeti is afraid of fire and thus will probably avoid human habitations (FB).
- Tibet is one of the most persistent offenders of Clause 73 of the International Code of Wizarding Secrecy due to the number of yeti sightings by Muggles, to the point that a permanent International Task Force is stationed in Tibet to help control the situation (FB).
Stories of yeti sightings have purported Tibetan and Nepali culture for generations.
The word itself is derived from the Tibetan words for "rock," "rocky place," and "bear."
Yeti stories and sightings are so common, many believe yetis to be real. Whether they are or not is a different story, but if even wizards can't properly study them, what chance do we mere muggles have?
From the Web
"Yeti" from Harry Potter Wiki