Turtles were a type of reptile.
The Eighth Doctor once materialised the TARDIS on the back of a giant prehistoric turtle. (AUDIO: Absolution)
Bernice Summerfield kept two turtles (Squidgy and Speckley) as pets while living in isolation, when she had run away from the Spacefleet Academy. (AUDIO: 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. (PROSE: 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. (PROSE: Cat's Cradle: Warhead)
Turtles were among the marine animals accidentally killed by the Arill during their visit to Earth in the 12th century. Their bodies washed up on the shore near Lowith, where they were gathered by the villagers for food. (PROSE: Dark Horizons)
Rose Tyler described the Ice Warriors as "totally turtley." (AUDIO: Cold Vengeance)
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.