At 2:51am this morning a caller phoned 911 to report flames coming from the computer room on the first floor of a single family residence in the area of Ocean View and Bounty Dr.  A total of 12 Anchorage Fire Department units responded and the fire was under control within 30 minutes.  The first unit observed smoke coming from the structure with a report that occupants had evacuated and 3 animals were still inside.  Firefighters worked quickly to establish attack lines.  It was reported that the fire originated in the basement, vented out a first floor window up to a second floor window in which the second floor bedroom was charred.  There was smoke and heat damage throughout the residence.  There were no injuries and all of the animals were rescued.  The cause of fire in under investigation and damage is estimated at approximately $50,000.  Red Cross provided assistance to the family of four.