K9 Mark IV/Appearances

Doctor Who
Series 2
 * School Reunion

Series 4
 * Journey's End

The Sarah Jane Adventures
Series 1
 * Invasion of the Bane
 * The Lost Boy

Series 3
 * The Mad Woman in the Attic
 * The Wedding of Sarah Jane Smith
 * Mona Lisa's Revenge
 * The Gift

Mini-episodes
 * From Raxacoricofallapatorius With Love

The Sarah Jane Adventures novelisations

 * Invasion of the Bane
 * The Lost Boy

Find Your Fate series

 * Search for the Doctor

Short stories

 * A Dog's Life