Video Games Encyclopedia

Digital pets are a subgenre of artificial life game where players train, maintain, and watch a simulated animal. The pets can be simulations of real animals, or fantasy pets. Unlike genetic artificial life games that focus on larger populations of organisms, digital pet games usually allow players to interact with one or a few pets at once. In contrast to artificial life games, digital pets do not usually reproduce or die, although there are exceptions where pets will run away if ignored or mistreated.
Digital pets are usually designed to be cute, and act out a range of emotions and behaviors that tell the player how to influence the pet. “This quality of rich intelligence distinguishes artificial pets from other kinds of A-life, in which individuals have simple rules but the population as a whole develops emergent properties”. Players are able to tease, groom, and teach the pet, and so they must be able to learn behaviors from the player. However, these behaviors are typically “preprogrammed and are not truly emergent”.
Game designers try to sustain the player’s attention by mixing common behaviors with more rare ones, so the player is motivated to keep playing until they see them. Otherwise, these games often lack a victory condition or challenge, and can be classified as software toys. There are also numerous online pet-raising/virtual pet games. Today online games which allow you to raise show dogs or sim horse games are also quite popular.