The toddler, Lexi, was left with four puncture wounds, a split lip and a burst vein when she tried to hug the seven-year-old Japanese Akita.
The strong pet called Thi clamped its jaws so tightly around the baby's face that surgeons had to remove a chunk of the dog's tooth that broke off and became lodged in her flesh, website 'SWNS.Com' reported.
The girl's mother Gemma fears Lexi will be scarred for life and has set up a Facebook page demanding that police destroy the dog, irrespective of it being legal to own.
Gemma claims the Thi has lashed out at kids in past as well, snapping at a baby's face but failing to draw blood.
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Her Facebook page 'Justice for Lexi' has already garnered support of hundreds of people, the report said.
The brutal attack took place at the home of Gemma's friend, in St Austell, Cornwall, who was looking after Thi as a favour for its owner.
Gemma and her friend wrestled the animal away from the tot before taking the little girl to hospital.