Loyal

Loyal is a pet trait featured in The Sims 3: Pets and The Sims 4: Cats & Dogs. The trait is only available for dogs in both games.

The Sims 3: Pets

"A dog is a Sim's best friend" is a saying that certainly holds true! Loyal dogs love spending time and interacting with their Sims, and even seem to learn skills faster than other dogs.

Attributes

Dogs will tend to follow around the Sims with whom they have the highest relationship.
Dogs will learn skills more quickly.
Dogs will build relationships with family members more quickly.
Dogs will accept social interactions with Sims more often.
Dogs with this trait are very effective against burglars.
In The Sims 3: Supernatural, Loyal dogs will growl at invading zombies.
In The Sims 3 Pets (console), Loyal dogs will never run away from fire and will guide Sims away from it.^{[confirmation needed]}