PREMIUM, PREMIUM, PREMIUM, everything is paid! Like half of the new items put into circulation after the game release are paid.
It's a terrible choice imo. I understand some of the new items being paid bc they're almost cosmetic stuff, but the pet nature also being premium is ugh... oh well. Pet-related stuff on a pet site being a paid thing is pretty shady and the community has been pretty vocal about it since the release of the $60 pet. (The pen expansion could be a potato item, but being premium is quite okay since we already have room lots of pets and it's a really over the top thing wanting to have more than 400 pets)