A two-month-old girl is in hospital after being attacked by her neighbor's pit bull as she played in her bouncy chair.

Baby Jemma-Linda Gonzalez was in the backyard of her home in San Diego, California, with her mother when their neighbor's dog sprung at her on Monday afternoon.

She was sitting in a bouncy chair and the motion is believed to have triggered the dog.

Baby Jemma-Linda Gonzalez was savaged by her neighbor's pit bull in San Diego on Monday afternoon. The two-month-old underwent surgery on Monday and is now in hospital in a serious but stable condition

The animal savaged her in front of her mother and its owner, puncturing her eyesockets and leaving her covered in blood and with broken bones in her little face.

Eventually, the dog's owner was able to pry it off of her by sticking his hand in its mouth.

Jemma-Linda was taken away by ambulance to hospital where she remains in a serious but stable condition after undergoing surgery.

The dog was put down afterwards.

Now, the infant's family are fundraising to pay her medical bills. They hope to raise $10,000 through a GoFundMe page found here.

'She has a broken nose, punctured eye sockets, misplaced jawline, fractured cranium, a torn lip, brain punctured, & a crack behind her ear.

Jemma-Linda is pictured (left) before the attack. She suffered broken bones and punctured eye sockets and also had damage done to her skull

The infant was sitting in her bouncy chair (pictured) when the dog pounced

The dog's owner, who was there with the girl's mother, was able to pry it off of her by shoving his hand in its mouth. Above, the scene of the attack

'She is currently stable but fighting anesthesia.

'Future complications may include the inability to develop properly mentally, & she will need plastic surgery in the future to replace her misplaced jawline,' her sister Shermane Eugene said on a GoFundMe page.

'Jemma-Linda is the strongest & tiniest fighter I've ever seen!

Jemma-Linda's family is now raising money for the medical help she needs which will include rebuilding her skull

'With all of your prayers and support, we have hopes she will make a speedy and full Recovery.

'Thank you all for the help!' she added.

Her other sister told KUSI she was grateful the dog's owner agreed to have it euthanized.

'It's really a hard decision to make especially when he has a bond with the dog, raising the dog since he was little and everything like that so I think it was a responsible decision for him to make,' Taylien Gonzalez said.

Police are not pressing charges. They say it was an unfortunate accident.