Personality (pet)

A pet's personality in The Sims: Unleashed and The Sims 2: Pets is based on a scale of five qualities.

The Sims: Unleashed
In The Sims: Unleashed, pet personalities use the same zero-to-ten (actually 0 to 10.00) scale that human Sims do. A pet's personality is split into five sections: Quietness, friendliness, playfulness, smartness, and loyalty.

When adopting a pet, the pet's personality is set at random. The player has no control over this, though there are third-party programs and hacked objects which allow players to adjust a pet's personality.

The Sims 2: Pets
In The Sims 2: Pets, a pet's personality is split into 5 categories:
 * Intelligence (Doofus to Genius)
 * Activeness (Hyper to Lazy)
 * Friendliness (Independent to Friendly)
 * Aggression (Aggressive to Cowardly)
 * Cleanliness (Pigpen to Finicky)

Each category has three values, the ones at each end, and an in-the-middle average value. For example, a pet could be Hyper, or Lazy, or somewhere in between, but pets don't get the zero-to-ten scale that human Sims do.