Haratha

Haratha was the wolf companion of Rexxar during his time on Draenor and the First and Second Wars. He was killed protecting his master in the final retreat from the Dark Portal by a dying warlock of the Horde wanting to rejuvenate himself. Rexxar avenged Haratha by killing the warlock.

Trivia

 * The word "Haratha" (חרטה) means 'regret' or 'remorse' in the Hebrew language.