The woman did not return home from her walk Thursday so her husband and neighbors searched the area.
They couldn't find her and called 911.
Deputies and emergency personnel discovered her body along an unused road.
It appeared she was attacked by dogs and authorities later located them in the neighborhood.
The pit bulls were placed into quarantine and the dogs' owner is cooperating with authorities.
The district attorney's office is reviewing the case.
The name of the victim has not been released.
"This is a very tragic event, which has deeply affected the family, friends, deputies and first responders," Montgomery County Sheriff Chris Watkins said. "Our thoughts and prayers are being extended to all."
Comment: A list of the fatalities caused by this type of dog across America over the last 12 months:
Woman killed by pit bull terrier in Chicago
Boy, 2, killed by several pit bull terriers in Philadelphia
6-year-old girl dies following pit bull attack in Jacksonville, Florida
8-month-old girl killed by family pit bull in Miramar, Florida
Family pit bull terrier kills 6-year-old boy in Altoona, Pennsylvania
Woman killed by 2 pit bull terriers in Gulfport, Mississippi
Woman mauled to death by at least one of her pit bull terriers in Milwaukee, Wisconsin
Boy killed by family pit bull terrier in Converse, Texas
Young girl killed by pit bull terrier in Duncan, Oklahoma
Woman killed by pit bull terrier in West Monroe, Louisiana
Woman killed by 2 pit bull terriers in Bell County, Kentucky
Woman mauled to death by her pit bull terriers in Goochland County, Virginia
Elderly woman killed by her own pit bull terrier in Alsip, Illinois
Woman killed by pack of pit bull terriers in Jackson County, Alabama; second such attack in the state in 10 days
Pack of 4 pit bull terriers kill woman in Guntersville, Alabama; seriously injure another
Man dies following attack by 4 pit bull terriers in Philadelphia
Boy killed by 2 pit bull terriers in Lowell, Massachusetts
61-year-old woman killed by pit bull terrier in Gilmer County, Georgia
1-month-old baby killed by 2 pit bull terriers in Knox County, Ohio
Woman dies from injuries sustained in pit bull terrier attack in Neshoba County, Mississippi
Woman dies following pit bull terrier attack in Calhoun County, Florida
If something in the environment is causing people to become more erratic, aggressive and odd in their behavior one might reasonably expect such manifestations to be reflected in the animal kingdom. Particularly in those domesticated creatures close to humans, for example dogs and then for certain kinds of dogs with questionable temperaments to go crazy with increasing frequency. Could this be the pattern happening now?