A dog died in an early Sunday house fire in Apex, authorities said.
The fire was reported shortly before 5 a.m. at 100 Perry Farms Drive.
Firefighters from Apex and Cary responded, and flames were visible by the time the arrived.
A mother, her daughter and an infant escaped unharmed after their home security system alerted them to the fire, authorities said.
The cause of the fire remains under investigation.
The two-story home is expected to be a total loss, authorities said. Red Cross was notified and will assist the family.