Futurama, more preciesly, Jurassic Bark episode.
I assume you watched it, if not, you probably regret it... Anyway, in that episode, Fry (protagonist) finds a fossile of his dog from the year 2000. He tries to bring him back to life, meanwhile, we get to see a lot of scenes from their life - where they met, how did they spend time and play.
Then, Fry realises that his dog was fossiled at the age of 15 - so basically, he died 12 years after Fry was frozen. He knows that this dog wouldn't be happy, that he had a new life, new owners and has learned a lot new trick already...
But the truth was a lot sadder, and that makes me cry - the dog waited for Fry to come back, every single day, rain or snow, not moving from the place Fry worked at. God, why did I remind myself of how sad that was...