As of June 3, 2015, the Ugglys Pet Shop has come to TRU in USA.
The store I was at had 18 different 8-packs at $10 each.
There are duplicates among the visible figures, but all 18 packs were indeed unique.
(Edit: In hindsight I think there might have only been 16 unique packs rather than 18.)
Conceivably, this means that the whole series is contained within one wave (18 X 8 = 144, and there are 90 to collect in the base set).
Unfortunately, I could not spare $180 in one drop to find out.
(Edit: Absolutely not the case at all. There will be at least two distinct waves to collect the set.)
This thread is to track what figures are hidden in the packs based on what figures are visible.
Also, add what figures are in the blind 2-packs based on any identifying numbers stamped on the packages.
For a general discussion of the toyline, please use the "Mega Thread" here:
I put some photos of the Gross Homes over there.
There are six visible figures per 8-pack, and the two hidden figures are at the bottom.
Each 8-pack also has one poop (or two when a metallic turd is included).
The two hidden figures will be the same per unique pack, but I suspect the poop(s) included is/are truly random.
First, here are checklists: