Parakon
From Tardis Wiki, the free Doctor Who reference
Parakon was a planet that was inhabited by the Naglons. The Third Doctor and the Brigadier thwarted the Naglons' invasion of Earth and went to Parakon to rescue Sarah Jane Smith and Jeremy Fitzoliver, who had been kidnapped and taken there.
Indigenous lifeforms included trap lizards and arrow serpents. (AUDIO: The Paradise of Death)