A woman's dog was pinned down and attacked by another pet on Beccles Common late last week.
Police are appealing for people who may have witnessed the attack, which took place at 9.45am on Saturday.
The woman was walking her dog when another dog, described as a grey Staffordshire/bull terrier, pinned the woman's dog down and attacked it.
The offending dog was being walked by another woman who failed to exchange details and left the scene.
Anyone that witnessed the incident or has any information should contact police at either 101 or online at www.suffolk.police.uk, quoting crime reference number 37/1616/23.
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