That is the thing, they won't do that because fans would actually want it and pay for it. So, instead, they will probably just do "breeds" of cats and dogs as digital DLC through Origin.
I personally would love to see what reptiles were included in this type of expansion. Since it is digital, could we seemingly have a recreation of Jurassic Park or something? That would be cool.
RE: Sims 4 Pets review