Cats and Dogs is the best selling expansion pack

Out of all the pet versions for the series, I prefer Cats & Dogs for Sims 4 and I never played with the pets for any of the EPs. I like the neighborhood and the clinic that came with it. I was never into controlling my pets and that is me. I could have done w/o the EPs but I am an collector and I like to complete my collections whether the game is mediocre or not, there is something in those packs that I can use. :)