Tricey

Tricey was the name given by the Eleventh Doctor to a Triceratops he encountered on the Silurian Ark.

Biography
Tricey behaved somewhat like a dog, fetching Brian Williams's golf ball and enjoyed being patted by the Doctor. Tricey was used by the Doctor and his friends as a mount to escape Solomon's robots on one occasion. However, soon afterwards, Tricey was shot and killed under Solomon's orders to demonstrate his seriousness. The Doctor comforted Tricey as it died. (TV: Dinosaurs on a Spaceship)

Legacy
When the Doctor wrote about the ark in his diary, there was a photograph of the dinosaur. (PROSE: )