K9 and the Beasts of Vega (novel)

Publisher's summary
Outside, the space ship was surrounded by hordes of evil beasts -- a mass of fangs, jaws and lashing tails. The shadowy monsters loom over the ship, attacking from all sides. Sounds of panic and screaming ring out everywhere. Only K9 keeps his usual calm.

Characters

 * K9 Mark I
 * Professor Romius - a young human female on the spaceship Shapeshifter 142
 * Unnamed captain of the vessel

Continuity

 * K9 is described as working for the Time Lords, suggesting this takes place some time after the events of The Invasion of Time.
 * A one-page "primer" on K9's history references his creation by Professor Marius, and the fact that he was later improved by "Time Lord Theta Sigma", aka The Doctor - a possible attempt at assigning a "real name" to the Doctor.
 * K9 continues to pilot the vessel K-NEL which was assigned to him in the previous book