There seems to be growing concern over off-leash dogs at San Francisco's Crissy Field.
Crissy Field is a dog lover's paradise, but dogs are now being blamed for killing some young wildlife there.
"It's probably a good idea to keep them on a leash," said Stephanie Diaz. "I would rather have my dog on a leash all the time than have the space we can visit limited."
On April 18, some off-leash dogs attacked and killed two goslings on the shoreline.
That's why the Golden Gate National Recreation Area is sending out a warning to dog owners.
The superintendent released this statement: "Visitors with dogs are responsible for preventing their dogs from damaging park resources or attacking wildlife or people. We will use existing federal regulations to prosecute owners who create the kind of problems that have occurred throughout the park."
Dog trainer Scott Stauffer said no dog should be off-leash if an owner can't control it.
"There's a command called, 'Leave it,' a dog should be able to pull away from it and come back to the owner," Stauffer said. "And that's something I teach with my classes."
According to the Golden Gate National Recreation Area, there have been at least nine incidents in the past year where a dog bit a park employee or a visitor out here. They say most of those incidents involved off-leash dogs.
But dog advocate Sally Stephens says this warning comes too close to a supplemental dog management plan about to be released that would restrict where dogs can roam in the recreation area.
"It makes you wonder whether it's an attempt to kind of imply there's a much larger problem than there is," Stephens said.
Park officials say the attack won't affect the plan
Watchdogs are questioning an exclusive agreement between the City of Oakland and a non-profit group, tapped to lead a multi-million dollar project to redevelop the area around the Coliseum BART station.