Shadow mastiff

Shadow mastiffs was a massive shadow dog.

Description
Shadow mastiffs were all black, making it very easy for them to blend in with shadows.

Combat
The sound of a pack of shadow mastiffs baying caused all but the bravest individuals to tremble.

Ecology
Shadow mastiff whelps could be sold for 200–500 gp. However, they had to be kept in constant darkness, as bright light could kill them.

History
It was believed that shadow mastiffs resulted from dogs that were killed by undead shadows and then transported to the Demiplane of Shadow to be with others of their kind.

Appearances

 * Novels:
 * Bloodwalk
 * Unbroken Chain
 * Mistress of the Night