Dog

The Sims: Unleashed
$$ Dogs were introduced in The Sims: Unleashed. In The Sims, a family can adopt a dog by going to the Pet Center in Old Town, or a Sim can befriend and adopt a stray. However, the Create-A-Sim section of The Sims does not allow you to create pets.

Skills for dogs are obedience, tricks, and housebreaking. Dogs must be housebroken by praising them when they relieve themselves outside and/or scolding them when they do it inside. A dog may - or may not - try to drive El Bandito the raccoon off a lot, but will ignore the burglar.

The Sims 2
In The Sims 2: Pets, dogs may be created in the Create-A-Pet section of Create-A-Sim. Sims can adopt dogs or puppies using the phone or by buying them on community lots that sell pets. Players can also get a pet dog in Apartment Life by buying the pet cage in the pets section of buy mode, though these dogs are "decorative", and are considered as small pets.

Unlike their counterparts in Unleashed, puppies in Pets are mobile and largely self-sufficient. They can feed themselves (provided there is food available) and sleep on pet beds without the help of a Sim or their mother. Puppies can also learn Behaviors. However, puppies (as well as kittens) cannot go up or down stairs without the help of a Sim, and they cannot get jobs or learn Commands.