Turtle

Turtles were a type of reptile.

The Eighth Doctor once materialised the TARDIS on the back of a giant prehistoric turtle. (BFA: Absolution)

Bernice Summerfield kept two turtles as pets while living in isolation. (BFA: The Shadow of the Scourge)

The red-eared slider was type of turtle found on Earth and was worth 40 points in the I-Spyder Book of Earth Creatures if it was spotted. (NSA: The Last Dodo)

In Turkey, Ace stopped a large turtle from crawling across a road and took it to the sea's edge, but it started crawling back towards the road. She later found the dead body of the turtle, or one like it, but before she could return it to the sea she was attacked by Massoud. (NA: Cat's Cradle: Warhead)

Behind the scenes
While filming Planet of Fire in Lanzarote, Dallas Adams and Peter Wyngarde took some turtles from a hotel pool and released them in the sea, causing the police to be summoned.