Paramedic Celiomar Ferreira do Couto, 42, who made the video, said the whole service team was touched by the love shown by the dog for its owner, a homeless man.
Commenting in the video, Mr Couto says to his colleague as he watches the dog chase the ambulance – 'doesn't he get tired?'
Then to the dog he shouts – 'Go home. Go and have a rest, give up.'
My brother showed me this yesterday and it was so sweet. He just wanted to stay and make sure his owner was ok.
Dogs are the most loving animals ever, how can anyone hate them? I miss my dog now