A Chula Vista couple and their two grandchildren escaped Wednesday when fire damaged their garage containing large amounts of ammunition, police officers confirmed.
Fire broke out at the Myra Avenue home just before 4 a.m.
A neighbor stepped outside to let the dog out when he noticed an orange glow coming from one of the homes on the street.
Renee McCarty said her husband ran over to the home and opened the front door to alert them to the fire.
Witnesses could hear rounds of ammunition exploding while members of the Chula Vista Fire Department battled the flames.
The damage from the fire spread from the garage into the home. It appears to have been under renovation at the time of the fire.
One dog, a Chihuahua named Princess, died in the fire.
The cause of the fire was under investigation.