One had a fresh wound on its side, they noticed, so they alerted authorities.
The dogs didn't want to leave the lake and were being cared for by Broward County Animal Care and Adoption, WSVN said.
Florida Fish and Wildlife spokesman Robert Klepper told the Palm Beach Post the agency has received 11 calls about alligator activity in the Silver Lake Rotary Nature Park area since 2005.
Authorities located her body a short time later, the FWC announced on Twitter.
"This tragedy is heartbreaking for everyone involved, and our honest condolences go out to the family and friends of the victim at this time", Florida Fish and Wildlife Conservation Commission spokesman Rob Klepper told KPLG-TV.
"He had warned her not to take the dogs over to that place because they had seen gators before and it isn't safe", Limia said, relaying what he had heard from other neighbors.
One resident saw a woman walking her dogs near the park, and then later, three dogs were found wandering alone, one of which was injured.
Florida Fish and Wildlife Conservation Commission said Saturday it will be "conducting a thorough investigation into this incident".
The warning from the neighborhood association about alligators in the water may have prompted her to change things up and go to a lake farther away.
The most recent death occurred in 2016, when a 2-year-old boy playing near the water's edge at a Walt Disney World resort was killed.