Bonded this one today and took it into Destard, I have consume up(but then I always do on all pets), it is nigh on indestructible, you would think I would be vetting away furiously but I was not, every now and then it would drop to 84% so Id throw a vet at it, I have had it fight 2 GDs at once without vetting it at all
Consume Damage is incredibly powerful in the first level of Destard, since all the Dragons there do 100% Physical Damage with their melee, and Consume Damage converts Physical Damage into a HPR and HCI buff for your pet. I've pulled all of first level Destard onto my Saurosaurus before while running Consume Damage, and they failed to even scratch him. Not just because of his Life Leech, but also because he had 150 HPR from Consume Damage converting all the Physical Damage.
Put him toe to toe with a max hp HPR life leech Tsuki and the Tsuki held his own for over a hour of the two pounding on each other. And that was without consume on either. neither got below half life with no vet healing.
The Tsuki Wolf wasn't able to finish off the GD, likely because the Tsuki Wolf was casting Corpse Skin on the GD, improving it's Physical Resist, which is the type of damage that Tsuki Wolves deal the most of (90%), so the GD was taking so little damage that his occasional Greater Heal was able to keep him up. Try giving the Tsuki Wolf AI on top of his Necro and Life Leech (if it'll still let you, haven't leveled a Tsuki Wolf since TC testing, was able to give them AI on there). If the Devs fix the problem with Physical or Cold heavy Necro pets casting Corpse Skin, then that Tsuki Wolf should easily be able to take that GD.
Dex can be higher. It's stamina that was capped.
Dex = movement rate, stam = swing rate.
Stamina is both movement rate and swing rate. Hence why creatures/NPCs slow down both their attacks and movement when severely damaged, they've lost a lot of Stam.
The top tanks i'd say are Saurosaurus and Cu Sidhe when leveled right. Saurosaurus can spawn with up to 85 Physical and 90 Fire Resist (same as GD maxes), and has Life Leech, making him heal himself for half the damage he inflicts. The Cu Sidhe can self heal with bandages.
The top damage pets, are probably the Rune Beetle, Fire Beetle, and potentially the Shadow Wyrm. Crimson/Platinum Drakes can out damage a GD as well when fighting an opponent that is weak to their damage type.
The Rune Beetle for obvious reasons.
The Fire Beetle can become particularly nasty. His 100% Fire Damage synergizes well with someone casting Corpse Skin, he can learn Rune Corruption (halves Resists)
and AI, which makes him good against even Fire resistant foes, and since he starts at 1 slot and can be trained to 5, he gets a LOT of training points. I have a 5 slot Fire Beetle with 857 Health/150 Stam/500 Mana, 678 STR (he hits total stat cap)/150 DEX/500 INT, 30 SR/30 MR, 80/80/65/60/80, 24-33 Base Damage, 120 Wrestling/120 Tactics/120 Anatomy, got enough Training Points saved to get 120 Resist/120 Parry/120 Focus/120 Med for when i get the Powerscrolls, and he has Rune Corruption and AI. When he attacks something, his opponents melt.
The Shadow Wyrm has very strong damage potential as well, he can hit like a freight train. He has up to 1,030 STR (WAY above anything else, and STR contributes quite a bit to melee damage), and 29-35 Base Damage (more than any other pet in the game). He also has both Magery and Necro. The only problem is, he maxes out at GM Wrest (and so has a harder time landing hits), and his Corpse Skin casts lower his own melee damage output, since it raises Physical/Cold Resist by 10, and the Shadow Wyrm does 75% Physical/25% Cold Damage...