Dog attack: Boy's surgery to reattach ear after being bitten by Great Dane

A three-year-old boy has been bitten by a dog as he was riding his bicycle in Newcastle.

A Great Dane has been put down after attacking a toddler riding a bike.

A Great Dane has been put down after attacking a toddler riding a bike. Pictured for a file image. Source: AAP

A Great Dane that attacked a three-year-old boy in Newcastle, partly ripping off his ear, is likely to be put down following a council investigation.

The toddler underwent surgery on Wednesday morning after being mauled by the dog in the Newcastle suburb of Mayfield on Tuesday evening.

He was riding his bike at the time accompanied by his mother and older sister.

Detective Acting Inspector Jeffrey Little says the Great Dane ran onto the street through an open gate before biting the back of the toddler's neck and ear.

The three-year-old had surgery "to attach part of his ear", the detective said, before adding his injuries were not life-threatening.

Det Act Insp Little said there was "every chance" the dog would be destroyed following an investigation by the local council.

He admitted there was "no suggestion" the dog involved had attacked anyone before.

"It's not a common theme for us to go to an attack by a Great Dane," the detective told reporters in Newcastle.

"But the fact remains ... every dog has the potential, large or small, to attack."

The toddler remains in the John Hunter Children's Hospital in a stable condition.

Tuesday evening's attack came just days after a 12-month-old girl was mauled to death by a Rottweiler.

The infant, Kamillah, was attacked by the Rottweiler at a home in Inverell on Saturday afternoon. She died on the way to hospital despite the efforts of paramedics.

The dog was seized by council rangers and a NSW Police spokeswoman on Tuesday confirmed it had been put down.

Published 7 March 2018 at 1:10pm, updated 7 March 2018 at 1:24pm