Just my .02 but if you are doing Spawns don't put Chiv on the Cu.
Unless they have fixed the EoO deal. Cu's love to cast that on side 3 and 4.. then death fairly quick. I prefer the AI/AP Naja over the Cu anyway.
They turn EoO on and off so often it does not matter.
Any pet will die in a crowd of hard hitters not from EoO but from the pet constantly changing targets and not killing them one at a time.
The pet will be about to attack something and another Mob will hit the pet and make the pet change targets before it attacks. And this will go on and on. You can watch a pet stand there and spin around until it dies. This is not from EoO. That is a myth made from players who do not use pets daily.
The pet AI is the issue. Not Chivalry.
Do not let the pet get surrounded with no exit. When mine does I walk up, mount the pet and walk a few spaces away and then it will kill them all one at a time.
Pets with any AoE aka area damage will cause itself to constantly change targets and aggro new mobs.
Use a pet smartly. Know how the pet AI works. Me using my toon smartly is another thread...
Side note. In Khaldun there would often be 3 of those red archers that would stand in a triangle pattern on the screen. I tell my pet to attack one and before it got there, another archer would hit it. The pet would go to the other archer. before it got there, the other archer would hit it and the pet would go to it. And this could repeat forever because the pet would change targets and never kill one. If I knew how to make videos I would have, and shown to Kyronix. The pet AI is the issue. Not Chivalry.