The dog, a two-year-old female dog described as white pit bull with brown spots, was put into the back yard. Animal Control officers were called.
Thurman says it appears the attack was unprovoked. The family had reportedly never had a problem with the dog in the past, which slept in their bed.
The victim, who has been identified as Helen Grimes, is listed in critical condition at Hermann Hospital.
According to Colleen Hodges with Harris County Animal Control, the owner told them he is taking the dog to the vet today to have it euthanized. The health department will perform a check for rabies.