Lethbridge Fire and Emergency Services were called to a house fire on Beech Road South on Friday night around 9:30 p.m.
Firefighters were able to get the fire under control but not before it reportedly caused extensive damage to the home, which appeared to be primarily on the back and side of the house.
The financial cost of the fire had not yet been determined.
No injuries were reported and the fire is currently under investigation.
According to a tweet by an animal control enforcement officer in Lethbridge, a small white dog escaped during the fire and is still missing.
Twenty-two firefighters from four stations responded to the call.