The zombie “pets” have no skills, if you look at their pet bar, growl, bite, claw etc are dark. Meaning the pet can NOT use its skills in zombie form. The problem is the pet can not be cured by DEATH, like our character can. We die and the plague is gone when we res. Not so for pets. Pets are perma bugged. Sadly i put a lot of effort in my pet, its a rare, i upgraded its bite and claw at every upgrade level, and now it is useless, since it cant taunt or hold agro. I went and tamed another pet but could not invest the time to go learn upgrades for it (my main pet was a cat, the replacement pet i tamed a wolf because there were no level 20 cats with the attack speed i wanted, so i just grabbed a wolf and made due with its weak skills.) As a hunter it made me very sad that this ugly zombie shape replaced my cat that i invested so much time in skill upgrades.