Yeth hound

A yeth hound was an intelligent outsider, that hunted during night. They couldn’t speak but could understand Infernal.

Description
A yeth hound looked like a big grey hound with glowing cherry red eyes. When not found alone or in a pair, they organized themselves in small packs consisting of less than a whole but of at least half a dozen.

Phobia
As mentioned above, yeth hounds hunted at night. Despite suffering no ill effect, they suffered from an irrational fear against the sun and never went under sunlight. “Never“ was meant literally, if they the choice was between going out under the sun and survive, or stay out of sunlight and die, they chose the latter.

Abilities
Yeth hounds had good senses, sight, hearing but especially their sense of smell was good.They were better at tracking prey by smell than other indicators.

They could run faster than humans and were good flyers who could fly even faster, despite having no wings. They glided a bit above ground to hunt and could stop and pick up flying with ease.

Combat Abilities
Yeth hounds fought by biting their enemy. Their bites were aligned to evil and once bitten their enemy was in danger of being tripped by them without being able to properly react to it.ref name="MM 3.5-260-262"/>

Their most special ability though was their voice. When a yeth hound barked or howled, those who weren’t evil outsiders, like yeth hounds, in a 300 ft. (91.44 m) radius were filled with an irrational fear, that made them run away from the sound emitting yeth hound. This fear was irrational because it was such that those suffering from it couldn’t even bring up the capability to think where or through which root flee, as long as it was away from the yeth hound.

Trivia
Yeth hounds were one of the servitors of the drow deity Vhaeraun, whose realm was Ellaniath.