The animal welfare charity is now investigating.
The RSPCA is appealing for information after a stray Staffie cross was found in a shocking state in Bolton.
The charity was called on Sunday 16 August when the dog was spotted by a member of the public with a large lump on her stomach which was dragging on the floor and bleeding.
She also had chronic eye issues and her nails had grown through her paw pads and out of the other side.
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