Baddies in "The Lion King” (6)
I believe the answer is:
hyenas
(Other definitions for hyenas that I've seen before include "Dog-like nocturnal carrion feeders" , "Wild animals, their howl sounds like laughter" , "Animal whose cry sounds like wild laughter" , "Dog-like animals with cry like human laughter" , "Carnivorous animals making sounds like wild laughter" .)