Wandered across a comic at Fur Affinity (titled "Butt a Horse of Course"),
then I found it at e621 under another name. ("Now_You_Can_Tapdance_by_fasttrack37d")

pool #7279

Turns out the three parties involved all uploaded the comic, but with different titles.

Artist uploaded it with title of "Now You Can Tapdance".
Page1 uploaded by artist at http://www.furaffinity.net/view/18346834/ (page numbers not included in artist's uploads)

It was a commission for Uperior and RemiDragon.

Uperior uploaded the comic with title of "A Stable Relationship"
http://www.furaffinity.net/gallery/uperior/folder/107768/A-Stable-Relationship

RemiDragon uploaded the comic with title of "Butt a Horse of Course"
http://www.furaffinity.net/gallery/remidragon/folder/109366/Butt-a-Horse-of-Course-Comic/

QUESTION: What should the pool name be?

How about: "Now You Can Tapdance" or "A Stable Relationship" or "Butt a Horse of Course" by fasttrack37d

or should each "or" be "also known as" ?

Pick the name you like best, and use the description field to mention the other names and which accounts called it that.