A woman has been rushed to hospital after being head-butted and punched in the face in a horrific attack at Mosman overnight.
Police said that shortly after 11.00pm, a 29-year-old woman and her 26-year-old partner left their home to walk their two dogs.
As they started walking along Glover Street they noticed a man on the opposite side of the street calling out to them.
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The two women stopped and the man crossed the street and approached them, allegedly yelling abuse.
Police said the man allegedly pushed the 29-year-old woman a number of times before head-butting her and walking away.
The woman then ran after the man and a second confrontation occurred with the man allegedly punching the woman a number of times to her face.
Emergency services were called and the woman was taken to hospital suffering multiple fractures to her eye socket.
The 34-year-old man was arrested nearby and taken to North Sydney Police Station where he is assisting police with inquiries.