Saijit Promchart, 47, Saithip Promchart, 49, said their five dogs were killed with poison in front of their house on Wednesday morning. That led them to erect a vinyl sign placing a curse on the killer for the same fate.
The sisters said they left home at 5am on Wednesday to sell goods at a market in Hat Yai town and were told at 9am that their dogs had been killed by poison.
They said their dogs were not fierce, had never bitten anyone and simply played around in front of their house.
They have filed a complaint with the village head asking for an investigation.