Two dogs were killed in a house fire on Rockford's east side. The fire broke out shortly after 3:30 pm Sunday at 265 Lilac Lane. Investigators aren't sure what caused the fire. Damage to the house is estimated at $45,000 dollars.  Rockford firefighters responed to another fire Sunday at  5214 Gingeridge Lane. No injuries were reported. Damage to the house is pegged at $40,000 dollars. The cause of the fire is under investigation.