This morning (Monday) a woman has been charged in connection with the attack.
Paula Jenkins (aged 43), of Meldrum Street, has been charged with two counts of being in charge of a dog dangerously out of control causing injury.
She has been bailed to appear at Tameside Magistrates on Thursday, November 2.
A number of emergency services vehicles were reportedly at the scene along Meldrum Street, near Alexandra Park, as they responded to the incident.
A spokesperson for GMP said yesterday: "At 11:23am this morning (Sunday 22 October) Greater Manchester Police were called to reports of a dog attack on Villa Road, Oldham.
"Emergency services attended and a 12-year-old boy was taken to hospital with serious injuries, believed to be life changing.
"A 31-year-old woman also received injuries, which are not thought to be life changing/threatening.
"Armed Response Vehicles and GMP Dog Unit were deployed, and the dog has been safely detained."
