Sand beast
From Tardis Wiki, the free Doctor Who reference
Sand beasts were formidable-looking and aggressive creatures native to Dido. According to Vicki they were herbivores.
Vicki tamed a sand beast and named it Sandy. Startled by its sudden appearance and aggressive manner, Barbara Wright, thinking it was a threat to Vicki, fired a flare gun at it, killing it. (TV: The Rescue)
