TULSA, Okla. (AP) - Two firefighters have been taken to a hospital for treatment after fighting a northwest Tulsa house fire in which five pets died.

District Fire Chief Greta Hurt said that the homeowners reported the fire around 4 p.m. Tuesday. Hurt said that the fire started in the back of the home and while firefighters were inside, officials believe that the heat shattered the back windows, letting in wind gusts that propelled the fire to the front of the house.

Firefighters exited the home as the fire moved forward. According to Hurt, one firefighter suffered steam burns and another was affected by dehydration. They were both were taken to the hospital, and Hurt said they are in stable condition.

The homeowners were not injured.

The cause of the fire is under investigation.