Imagine a real-life Rudolph turning up at your school...
Well that's exactly what happened to a group of pupils in Durham, north-east England.
One of their classmates brought in a reindeer for a special show-and-tell.
Five-year-old reindeer Frosty belongs to the girl's parents, who run a farm and activity centre.
It's fair to say Frosty got a very warm welcome!
Watch the clip, presented by Jenny, for more.