After a hunter's pet has died, the Mend Pet button will change into Revive Pet, so there's no reason to have them both on the action bar.
Modified by Edit
Patch changes Edit
- Patch 6.0.2 (14-October-2014): Mend Pet and Revive Pet now share the same button and changes based on the condition of the Hunter's pet.
- / Patch 4.0.1 (12-Oct-2010): Updated, including free to cast.
- Patch 2.1.0 (22-May-2007): Instant cast, higher heal, lower cost.