All pets have the same formula for damage, health and armor unless they evolve (Dire/Hearty/Elder etc...)

ie, 2-4 DMG for a Lvl 1 pet & 17-28 DMG for a Lvl 20 pet

ALL pets do slashing Damage and all ALL pets attack at a rate of one attack every 2 secondss
Beast mastery modifies the attack bonus for pets.

AL = 20 at Lvl 1
AL = 80 at Lvl 20 (again for ALL)

The pets listed (and so the ones this must apply to) are all those from Cantha:

Crane - Shing Jea Island, Pongmei Valley
Blue Lurker - Jade Sea
Reef Lurker - Undercity
Phoenix - Available in the rewards room after completing the game
Tiger - Pongmei Valley, Maishang Hills

White Tiger - Echovald Forest
Black Moa - Kurzick quest

Thanks to Kingy of [Kai] for providing this information.  For further information on pets see the Prophecies Guide "Pets Explained by Real"