28 November 2014 Last updated at 07:14 GMT
More and more companies are making computer generated pets - and they're becoming more advanced too.
In Jenny's report, she meets the creators of Animin, a new virtual pet that uses augmented reality.
She also asks whether virtual pets can ever be better than the real thing.
Chat: What makes your pet special?
It's CBBC Pet Week - we know loads of you love your furry and scaly pets, but there are plenty of you who enjoy playing with virtual animals too.