Woolly Rebellion

The Woolly Rebellion was a violent rebellion in 2211 that led to a renegotiation of the sheep-human relationship.

Upon seeing a sheep in Norway in 2018, the Thirteenth Doctor was frightened before she realised she had landed in a time period before the Woolly Rebellion. (TV: It Takes You Away) After landing her TARDIS in a field of sheep in Guelder in the early 16th century, she warned them that she was watching them and to "keep the plotting to a minimum". (COMIC: Hidden Human History)