All Spirits Great and Small

The name of the quests and achievement could be a reference to the books by James Herriott (Pseudonym, his real name was James Alfred Wight) about his work as a veterinarian. Kind of fitting.

There are three different quests to this questline. One available every week for three weeks in a row
Upon completing all three quests you receive the achievement "All Spirits Great and Small" for 15 points
You will also have three spirit animals roaming your conservatory (The Fisher King - Frosty - Hoawh) - you can pet Frosty and Hoawh but not ineract with The Fisher King

All Spirits Great and Small
Quest 1) You have to locate and click remains in FrostFire

All Spirits Great and Small
Quest 2) You have to locate and click remains located in Eastwind Rest at 62.66 79.26 Kun-Lai Summit.
You have to click a tiny pile of bones (remains) right in front of a yak.
Very easy to miss since you probably arrive at the spot from behind the yak and don't see the pile of bones in that way
It is the yak furthest away from Farmhand Ko, next to the watchtower.

All Spirits Great and Small
Quest 3) You have to locate and click remains located in Tiragarde sound at 62.42 23.64 Splinterbank Roost

Again a tiny pile of bones to be clicked

for those wondering about frostfire ridge: entrance to tunnel is 54.29 and bones are 51.30