Badger

BADGERS HAVE CAUSED SEVERAL THINGS IN THE SERIES:

Forest of Secrets
Cloudkit is nearly killed by a badger.

Firestar's Quest
Willowpelt is smashed by a badger to save her son, Sootpaw. She dies, of course.

Midnight (Book)
The questing cats meet a badger named Midnight (Character), who speaks cat and tells them that the fores will be destroyed.

Moonrise
Still Midnight (Character).

Twilight
Blackclaw and Hawkfrost drive a badger out of RiverClan territory. Squirrelflight, Brambleclaw, and other cats drive a badger out of ThunderClan territory. An army of badgers attack ThunderClan, killing Cinderpelt and Sootfur.