It isn't the only Hyena that "laughs." The other two types "laugh" too.
Only the spotted hyena "laughs". Laughter is a sign of excitement.
Only spotted hyenas are not the other one
The spotted, or 'Laughing Hyena" is not truly a dog and it is a member of the Hyaenidae family and not of the Canidae, but is regarded by many people as a dog.
The spotted hyena belongs to the genus: Paracrocuta.
spotted hyena
Spotted Hyena
There are four species of hyenas: the spotted, striped and brown hyenas and the aardwolf. The aardwolf eats only termites. The striped and brown hyenas scavenge more than the spotted hyena, and look different as well. Brown hyena spotted hyenastriped hyena aardwolf
a female
The spotted hyena lives in the eastern savanna of africa.
Hyena
That is the correct spelling , hyena, for the carnivorous mammal that "laughs" when it howls.
Spotted Hyena