I have noticed lately, with new characters, that when I acquire their Guild Page and Guild Herald it is definitely adding to the unique pet count with each. I log out and back in and the unique count definitely is remaining there... If this is the case, we essentially could have 50 characters per account, that get to revered and can buy both pets and adding 100 unique pets to our count; then this could continue with linking another account and then you could do another 50 characters with another 100 of these, and so on with other accounts. Sure it takes getting guild rep to revered to buy both pets, but something doesn't seem right about this. In my honest opinion, I believe, only 4 should could (one from each faction).
Please test for yourselves, but I'd like unique to honestly be unique, so have already submitted this as a bug report. We will see where it goes.
You've collected 0 pets