A Staffordshire bull terrier owner has been caught on CCTV footage aiming 40 punches and kicks at his pet before pouring a pint of beer over it.
The ginger-haired man lashes out at the poor Staffie before dragging it to the corner of the pub garden where they are sat, forcing it to sit under a bench as another drinker comes outside.
He then returns to the dog numerous times as it walks around, punching it and kicking it repeatedly.
The horrifying footage also shows the sad dog, which has been muzzled, sitting on the bench next to the second man, in a beige coat, when the ginger-haired owner comes rushing out.
He chases the dog away from the bench and even ends up pouring some of his pint on the poor animal.
The attack happened at the Royal Oak in Lewes, East Sussex, and landlady Trudy Funnell revealed she chucked the man out after he was brought to her attention.
She said: 'One of my staff came up to me and said there was an issue with a man and his dog in the garden.
'I watched him through the window and saw him hit the dog and I had to go over and ask him to leave.
'It was only afterwards, when I watched the whole incident on the CCTV, that I realised it went on for 15 minutes.
'We saw him punch the dog 36 times, kick it four times, choke it twice with the lead and he poured a pint of beer over it.
'What you can't really see in the video is that the dog is muzzled as well. So it can't even defend itself against him.
'I felt so guilty when I realised I let the poor dog leave with that man.
'The police have come and taken the CCTV, but the RSPCA needed a name and address before they could do anything.'
Sussex Police appealed for anyone with information or who recognises the man in the CCTV footage to get in touch with them.
A spokeswoman for the police said: 'We are investigating after receiving a report of man hitting a dog at the Royal Oak pub in Lewes.
'The man was reported to have also kicked and punched the dog and poured beer over it on Thursday (13 April) at about 6pm. He was asked to leave by pub staff.
'The RSPCA have been informed. The man is described as white, aged in his late 20s or early 30s, 5' 2', slim with blonde or ginger coloured hair and was wearing dark tracksuit bottoms.'
A spokeswoman for the RSPCA said: 'The police are aware of this incident and are leading the investigation.
'We will support them in whatever way is necessary and are keen to see the dog and inspect it to make sure it is alright.'