A thug smashed a bottle over a man's head in a terrifying row over dogs on Saturday as tempers soared during the hottest day of the year.
Shocking footage showed a calm evening on the Thames Path in Greenwich descending into chaos as the altercation escalated into a bloody brawl.
The trouble appeared to start when a large dog pounced on a smaller dog that was passing.
As the dogs bark, a man in a red polo shirt holding a bottle, who had been walking beside the woman with the smaller dog, angrily confronts the owner of the larger dog.
Almost immediately, a bald man in a white t-shirt gets between the two. It is not clear if the man in the white t-shirt knows the owner of the larger dog - a woman in a red and white dress who is standing off to the side.
A thug smashed a bottle over a man's head in a terrifying row over dogs on Saturday as tempers soared during the hottest day of the year
WARNING: EXPLICIT LANGUAGE
Shocking footage showed a calm evening on the Thames Path in Greenwich descending into chaos as the altercation escalated into a bloody brawl
The trouble appeared to start when a large dog pounced on a smaller dog that was passing
Shocked onlookers gasp and a few step forward to try to stop the fight from escalating any further. Pictured centre: The owner of the large dog
People begin to gather as the men square up to each other, swearing, and the women can be heard trying to explain to onlookers what happened.
While the dogs calm down, the men keep getting angrier and begin pointing in each other's faces. It is not clear whether either of the men knows the women holding the dogs.
Out of nowhere, a man in a red Adidas t-shirt, who appears unsteady on his feet, stumbles into frame and lands a blow on the face of the man in the polo shirt.
Incensed, the punched man raises the bottle he has been holding and lunges towards the bald man in the white t-shirt, who tries to kick him away.
A winch-inducing smash is heard as the bottle comes down on the bald man's head, breaking instantly and sending blood spilling down from his crown.
Shocked onlookers gasp and a few step forward to try to stop the fight from escalating any further as a group of men - including the one in the Adidas top who threw the first punch - try to separate the sparring pair.
The wounded man shouts 'give me the f***ing bottle' as he grabs one from another man and heads towards his attacker.
Meanwhile, woman with the small dog can be seen filming the altercation as she holds her pooch in her arms.
With several people now attempting to calm the fray, the man in the red polo shirt charges towards the man in the Adidas top, who manages to slip away unharmed.
Out of nowhere, a man in a red Adidas t-shirt, who appears unsteady on his feet, stumbles into
