Shrivenzale
From Tardis Wiki, the free Doctor Who reference
The Shrivenzales were large predators native to Ribos. They had acute hearing and were able to detect ultrasonic sounds. The Shrivenzales slept in the catacombs of Shur during the day and hunted smaller prey on the tundra at night.
The Ribosians kept a small Shrivenzale to guard the crown jewels of Shur during the nighttime. (TV: The Ribos Operation)
