The Sims 4 Cats & Dogs Expansion will bring a new Aspiration and Traits for Sims. The info gathered below was provided by EnglishSimmer in her Create-a-Pet Overview video.
The Sims 4 Cats & Dogs Expansion adds the new “Animal” Aspiration category and three new traits to the game. The Cat Lover and Dog Lover traits are stackable, so you don’t have to pick one or the other. Additionally, keep in mind there may traits that have not been reported yet.
Friend of the Animals – This Sim wants to be friends with the animals.
Animal Attraction (Bonus Trait) – Relationships with animals begin at higher values. (From Choosing the Friend of the Animals Aspiration in CAS)
Cat Lover – These Sims tend to make cats their companions, preferring the company of cats to other Sims.
Dog Lover – These Sims love to be near dogs. They will gain relationships faster with dogs and socialize with dogs more than the average Sim.