You should let your pet decide that! When your pet doesn't want to play with you anymore, he or she will automatically leave or walk away. When they do that, don't force your pet to play anymore. Xox, Smartiiz.
there really isn't a time
10 minutes was the longest play time without a stoppage or whistle in NHL hockey.
The dog live the longest
the longest animal i ever heard that lived for the longest time was a turtle thy have lived and can live for hundreds of years and they have been around for millions even older then dinosaurs!
The pet rodent which has the longest lifespan is the Guinea Pig. They readily live between 5 and 7 years.
They will all have equally long play time, as all media comforms to the same standard.
the whole game
255 hours, Guinness World Records.
I do not know if the link below is authoritative; 7 hours of continuous play time sounds to me like it has to be in the running for 'longest'!
47 hours
A turtle or tortoise
Shakespeare's longest tragedy and longest play is Hamlet.
You can't play as a pet