The I-Spyder Book of Earth Creatures

The I-Spyder Book of Earth Creatures was an electronic book of creatures.

The I-Spyder Book of Earth Creatures looked like a slim plastic slab. It listed every known animal species from the history of Earth. Points are given for each animal spotted, and when someone spotted enough creatures to gather 9 million points, Big Chief I-spyder sends the person a certificate. Martha Jones manages to gain this certificate by going to the Museum of the Last Ones.

Spotting a Time Lord gives the most points, even though they are not native to Earth. (TDA: The Last Dodo)


 * Possibly the importance of Time Lords is based on the Doctor's and other Time Lords involvement with Earth's history.