SHORT ANSWER
Virtual pets evolved across three important surfaces: desktop creatures that seemed to inhabit a computer, browser worlds built around accounts and economies, and handheld pets touched and spoken to directly. Each surface changed what companionship meant.
Desktop presence
PF.Magic’s Dogz and Catz placed animated animals on the desktop and emphasized individual behavior, training, and play. The computer became a habitat rather than merely a game console.
Persistent online worlds
Neopets connected virtual creatures to profiles, places, items, and a social economy. Persistence moved from a local device into an account and made pet identity portable across sessions.
Touch and voice
Nintendogs used the Nintendo DS touchscreen and microphone to make stroking, calling, and training feel direct. The lesson was not technical complexity alone: input methods can make a relationship feel physically closer.
What modern products inherit
Today’s browser and mobile AI pets combine these patterns—persistent identity, expressive bodies, direct manipulation, and sometimes open-ended language. The strongest designs still give the pet something to do besides talk.
How to read this topic
AIPets.com separates current products, published evidence, engineering practice, and forward-looking claims. Capabilities vary by product and update. Health, education, and emotional-wellbeing claims need evidence for the specific population and setting—not just a compelling demo.
Sources and further reading
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