The was at least one and it would appear that the young dogs were pit bull mix.
See post #5 this thread on the attack
https://www.freerepublic.com/focus/f-chat/3654825/posts
The sheriff would not ID the breed of dog in the attack, but the attending Vet did.
OKLAHOMA Update: the veterinarian who handled the dogs that killed Tracy Garcia, 52, in Ardmore posted this on the Westwood Veterinary Hospital Facebook page: Westwood Veterinary Hospital, Inc. 3 hrs “We have been receiving a lot of negative messages regarding the breeds of dogs involved in the terrible attack Thursday night. I believe that people are missing the point regarding the breeds of dogs that were involved. A woman died. The dogs appear to me to be a pit bull and 4 pit-bull mix puppies. Who knows what the female was. She looked to me like an Australian Shepherd mixed with something with short legs. It was tragic. The person who made a statement about the breed previously works at the shelter, not here.- Dr. Aldridge” www.facebook.com/westwoodvthosp/?