First of all Terror birds were never good pets (except for loke 2 months in MO1 where they were broke af and got nerfed quick).
second of all, we dont need more pets like the white bear. And certainly not one that hits as hard but is also faster.
third of all, a pet that can chase mounteds is completely broken mechanic and would ruin mounted AND foot pvp. By the way, we did have such a pet in MO1 during one those broken patches (brown bears could chase horses) and it was completely broken, completely ridiculous and got fixed very quickly.
for a guy that talks volumes about pvp balance, you come up with some very braindead posts Poisonarrow.