I decided to just create one in cas mode. I picked a Vizsla breed, I don't know much about dog breeds but I wouldn't think breeds matter in the sims 4 if just for appearance sake? I Gave her friendly, playful and hunter traits. I just google searched for dogs howling with hearts and I guessed before that she is in heat. I don't think there's anything I can do about it for her? Been training her and she now learns to do her "business" outside and even not to wake up sims! I bought for her a dog bowl, the pet sleep station and the play on the go toy box. Anything else? Also I have auto aging turned off, does this work for pets to?
