David Golt, 48, and his dog Boo were attacked by the American bull-terrier type breed as they left the Butter Market in North Street, Chichester.
Boo, an eight-year-old Lakeland Shitzu cross, had to have her eye removed, and Mr Golt suffered a fra
ctured finger after it was bitten to the bone as he defended his pet.
The bull-terrier has since been put down.
'The dog had Boo's head in its mouth and she was screaming,' said Mr Golt.
'I punched and kicked the dog, and so did the owner.
'I saw her head in the jaws of this animal and I was in shock.
'A guy from one of the shops came and unclipped the lead and then somehow the dog got led away.
A 26-year-old man from Cheshire was arrested on suspicion of failing to keep a dangerous dog under control and was bailed until Tuesday, but failed to appear.
Police said they would issue a warrant for his arrest. The bulldog was seized by dog wardens and was destroyed with the owner's agreement on Friday.
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