So you wanted a pet that can deal damage and/or have improved odds of holding aggro? Well that would be a dire pet. You looked at wolf and moa since they are easy to death level into dire pets but then you remembered how sexy the Melandru's Stalker was. You sadfaced because there was no way to shrine death level them ;-(
How to Death Level a Dire Melandru's Stalker, Run to Them Repeatedly.... end of guide Ok so you figured out that part but ffs it would take like 10 hours to do all that running and dying while NOT AFK. Well here is how to get that Dire Level 15 Melandru's Stalker in under 4 hours through gaming.
Obviously this will require Warrior Primary or Secondary to get both Frenzy and Healing Signet but Ranger Single Professions can still benefit from Healing Signet. Frenzy + Healing Signet cancel-casting Keep Frenzy active and when the Stalker goes to attack start casting healing signet and after he strikes you, use escape key to cancel it. He will now kill you 4 times faster and since he starts at level 5 not only does it save you 3-4 early levels, he also starts out dealing decent damage.
Time Per Level above Level 10: 10 to 11: 23 minutes 11 to 12: 24 minutes 12 to 13: 27 minutes 13 to 14: 32 minutes 14 to 15: 40 minutes /age was 3 hrs and 46 min for lvl 15
I suspect people could get this down below 3.5 hrs with Birthday Cupcakes. The +100 hp is only 2-3 extra hits but the speed boost can reduce run time by roughly 15 seconds. I'd only consider them starting at lvl 10 though where the number of runs starts to make the running itself the unengaging grindy part.