A dedicated dog was filmed chasing an ambulance carrying its owner after the man suffered an epileptic fit in the streets of Brazil.The footage, which was captured in Taguatinga in the country's Federal District in March, is currently going viral on social media, with people praising the canine's loyalty.Local media reports the dog stood by its homeless owner when he suddenly collapsed until paramedics arrived at the scene.As they sped to a nearby hospital with the man, they spotted the mutt in the rear-view mirror sprinting after the emergency vehicle. One of the paramedics filmed it easily keeping pace.With the determined dog hot on their tail and a long journey ahead, the crew finally pulls over and welcomes it inside.At the hospital, the faithful companion was later photographed standing beside its owner's stretcher where it reportedly remained for the length of the man's stay.