The Speelsnape was a predatory creature on the planet Necros. (TV: Revelation of the Daleks)
On average, a speelsnape weighed 55 kilograms. It could gracefully move as fast as a cheetah in pursuit of its prey, which it ate with its sharp teeth and strong jaw muscles that could bite and chew through any living thing. (PROSE: Slipback)
While it didn't harm humans, the speelsnape's natural enemy was the voltrox. The creature was best known for its tactic of hiding its head under a rock and pretending nothing could see it. Vogel compared Davros to a speelsnape in this regard. (TV: Revelation of the Daleks)
The Sixth Doctor said Beep, a sadistic tyrant, was as harmless as a speelsnape. (AUDIO: The Ratings War) He once had chocolate speelsnapes in his pocket, sweets, and said his favourite colour was magenta rather than green. (AUDIO: The Rani Elite) As his visit to Ravolox was reviewed during his trial at Space Station Zenobia, the Doctor protested that it was "obvious to a blind speelsnape" that he only worked for Drathro under duress. (TV: The Mysterious Planet)