Ability to adopt or create pets and run a pet store or shelter

I feel this is too reaching for them, seeing as how you can't even sell the rodents in retail stores due to how the store mechanics function, how can they be able to sell cats and dogs in them? The shelter thing could be doable, but maybe it might be a new venue type which once again would be too much of a bother for them to do but still, perfectly doable.

Also, someone mentioned this idea could be made for a DLC that not only needs one but TWO other DLCs? Please no. Don't give EA/Maxis more terrible marketing ideas.