Another dog has died of poisoning in Pahrump, bringing the total to five killed in the past month.
Now, residents of Comstock Park are joining Nye County detectives in efforts to keep it from happening again.
Debbie Cullen went door to door Tuesday to make her neighbors aware of what's been happening.
Her family's dog, Apache, is the fifth to die in the last month.
"You feel helpless sometimes," said Dr. Abhi Shekprikha of Homestead Animal Hospital. "You try to help them but there's only so much you can do."
Shekprikha has treated three of the poisoned dogs. He says the cases are definitely connected.
"All those symptoms are similar and also those dogs are related," he said. "They went to the same park in the same neighborhood. All those things tell you something is going on."
A notice went up on Comstock Park's community bulletin board, but Cullen didn't feel that was enough. She printed hundreds of flyers to give to her neighbors.
"Until something's done about it I'll keep going and going until every person in this park knows to keep your animals on a leash," she said.
Cullen and Pahrump animal advocate Ace Hampton say the Nye County Sheriff's Department is working with plenty of leads and may have an idea as to who is behind the poisonings.