SAN FRANCISCO (KRON) – Dog owners are on high alert in San Francisco following several coyote attacks. Some of those attacks at Crissy Field have turned deadly. Signs are all over Crissy Field and Beach warning dog owners about coyotes. One says “Alert: Off-leash dog and coyote aggression has been reported here.” But one San Francisco dog group says signs are not enough. They want real-time reporting of coyote incidents to be released to the public.  "Crissy Field and Baker Beach have become a hunting ground for dogs,” said Martha Walters, the chair of the Crissy Field Dog Group.  No animal neglect in death of dog at Pleasanton apartment balcony, police say So far this month, three dogs have been killed by coyotes at Crissy Field, and dog attacks have been reported weekly.  "All of a sudden they are being really really bold, and they are too comfortable with people because people have been feeding them,” Walters said.  She says there has been an “explosion of coyotes” at Crissy Field, and several dogs have been killed in the Presidio as well.  But Walters says there should be a public database where you can see real-time reporting of these incidents. The dog group is now calling on the Golden Gate National Recreation Area (GGRNA) and the Presidio Trust to be more transparent.  "We would like to see your data of coyote incidents and sightings, and they won't give it to us, so we finally had to file a Freedom of Public Information Act to see,” Walters said. “My biggest fear is some little kids getting attacked. Nobody wants that. So I just think it's imperative." The GGRNA tells KRON4 that each of the deaths this month involved off-leash dogs. The agency has posted signs in the area to warn people not to let their dogs off their leashes. The signs also offer safety tips advising dog owners to report coyote encounters to park dispatch. Dog owners at Crissy Field say they see coyotes often, and many have experienced encounters. "He has chased one off-leash before, so we are more careful now. We have frequent encounters but we keep our distance,” said Erin Bobsein.  One dog owner said she nearly got attacked by a coyote while protecting her dog this week, and park officials told her they can only intervene if a coyote is threatening the life of a human. Park officials say they will be monitoring the area over the next several days to scare coyotes off. They are still determining if they will take any additional actions.