Decor:
https://en.wowhead.com/achievement=63325
https://en.wowhead.com/achievement=61442

Mount:
https://en.wowhead.com/achievement=61463

Pet:
https://en.wowhead.com/achievement=62882
https://en.wowhead.com/achievement=62880
https://en.wowhead.com/achievement=63349

Unknown:
https://en.wowhead.com/achievement=62874
https://en.wowhead.com/achievement=62873