Blink Dog

Intelligent, predatory canines with limited teleportation abilities, Blink Dogs hunt in packs, "blinking" randomly until they surround their prey.

Sometimes while fighting, a blink dog will jump to an injured enemy and attack.

The distance restriction has a consequence that a blink dog will likely not jump unless a party is spread out to fight several opponents at once.
 * The exact conditions for a blink dog jumping around in combat may seem completely random at times, due to the factors involved. The most volatile factor is the selection of who to jump to; the target will be the most injured of the visible (possibly to the dog, possibly just not invisible) members of a nearby enemy faction, and the jump will only occur if this injured member is both seen by the dog and further than four meters away. Another factor is random, in that the creature will not jump half the time when it is at full hit points. (The intent was "above half" instead of "at full", but there is a bug in the calculation of half)
 * A fix for the calculation of half is available on the Vault.