Lotapareen

The Lotapareen were a species of tridactyly reptiles from the planet Lota in the Andromeda Galaxy.

Biology
Lotapareen were not humanoid in form. They had three legs arranged in a tripod, with a slim upright body and three arms. Their heads were oval shaped and they had saucer-like eyes and a stumpy snout. They also had lizard like skin, ranging in colour from grey, to turquoise, to acid yellow. Their third arm protruded from their chests; each arm ended in a hand with three fingers.

Both the Tenth Doctor and Donna Noble met Mesanth, a member of the Cult of Shining Darkness during their visit to the Andromeda Galaxy. (NSA: Shining Darkness)

History
The Lotapareen evolved from highly communal herbivorous ancestors. This meant that they hated violence and conflict. (NSA: Shining Darkness)