Gorrillazon

Gorillazons were a type of large fanged apes.

A few were kept in a zoo on Earth in the 22nd century. When the Doctor discovered a Dalek at the zoo, it transmitted an ultrasonic sound that drived the animals, including the Gorrillazons, berserk, creating a distraction while it captured a cage containing the Krikoosh. The Doctor soon canceled out the Dalek signal using his sonic screwdriver, although the animals did not settle immediately. (DWBIT: Carnage Zoo)