Tentrax
From Tardis Wiki, the free Doctor Who reference
A Tentrax was a creature from somewhere in the Mutter's Spiral it was a horned reptile with green plates for skin and claws. It was noted for its cruelty, which was why the Daleks captured one. They planned to isolate this quality and apply it to a new breed of Daleks. (DWM: The Dogs of Doom)
