Lists of the pets and where they're from:-
http://www.wowhead.com/news=219517/patc ... tivities-3
Bonkers is a drop from the chests opened in a cave using a key for 500 timeless coins each which you buy from Kukuru in the cave.
The drop ones from rares and elites can be found with this guide, which has a map as well as all drops:-
http://www.wowhead.com/guide=1132/rare- ... -1-5-2-5-4
Timeless Isle Rares are no-tag, if you see anyone fighting one feel free to join in, even opposite faction! And be nice and call out if you spot one so others can come join in with you