Original: Features that have been attributed to hellhounds include black fur, glowing red or sometimes glowing yellow eyes, super strength or speed, ghostly or phantom characteristics, foul odor, and sometimes even the ability to talk.
Simplified: Hellhounds are often said to have black fur, glowing red or sometimes glowing yellow eyes, super strength or speed, ghostly or phantom characteristics, a badodor, and sometimes even the ability to talk.