White Guardian Hound

There is one tameable creature with this look.

White Guardian Hound
Exotic family: Beast Masters only - level 10+.Exotic Family
Can only be used by Beast Mastery hunters that have reached level 10.
Core HoundsLevelLocation
Can Be Tamed
12Azuremyst Isle
Retains its original name after taming.
Core HoundsLevelLocation
Cannot Be Tamed
Omen is an outdoor raid boss that appears in Moonglade only during the Lunar Festival. He is classified as a demon.
Level scaling: Most NPCs will scale with the Hunter's level, within the constraints of their level range. Hunters can tame regular NPCs up to 2 levels higher than them, but can only tame elite NPCs of the hunter's level or below.