Pets from The Sims 3: Pets have their own unique traits that are not available to Sims. On the other hand, traits for Sims are not available to pets either. There is a total of 30 pet traits. Pet traits can be unique to one or two species, or can be shared by all three species of pet. For example, Agile is a horse-only trait and Loyal is a dog-only trait, Skittish is a cat and dog trait, and Playful is a trait for all three kinds of pet.