Looking at some of the items in other people's YT review videos, you can clearly see that they most likely made along with C&D but saved for this SP. And players who buy this SP and don't have C&D will only be able to use only half (?) of the pack since a lot of the objects and pet clothing are for cats and dogs. For me, this was a clear money grab on EA's part, and a huge slap in the face to players.
And don't get me started on the minor pets. I mean if you were going to make a SP for minor pets 1) it shouldn't have been the same pet with four different skins. 2) should have had more minor pets: turtles, birds, frogs, hermit crabs, etc. 3) Nothing for cats and dogs. If they wanted to give us stuff for an EP we already shelled out $40+ for, then they should have given those outfits as a free update.
One huge missed opportunity I feel are the fish. They had to chance to actually make them pets once more. We could feed them, clean out their tanks, and they could die. Heck, they could have added ferrets and bunnies too! How cute would those little guys be? And what about the hamster ball? Our hamsters each had one, and they would LOVE their time in there. Running around the house, we would give them their snacks. And our pet turtle now, we have a gate to keep in him the living room, and he explores, getting into everything. These are the little things that should/could have been created and added to the SP. Since it relates to minor pets.
The option to make homemade hamster food could have been an option as well. And more death options for pets. This game has become to safe. Nothing truly negative or bad every happens. Pets can't even die from random illnesses. Nor can children.