An investigation is under way after a dog was dumped in Stanford-le-Hope on Monday evening.
The dog was tied by her lead to a signpost on High Road in Fobbing, wearing a red coat with a grey bone motif.
She was left with sleeping bags with her for bedding and is microchipped although there are no details registered the RSPCA said.
RSPCA Inspector Adam Jones added: “She appears healthy and is very sweet-natured. I can’t imagine why anyone would want to leave her in this way.
“The road has a low traffic flow, especially at the time of night she was found, and very few houses.
“We will be following up all lines of inquiry including trying to glean more information from the microchip but if anyone recognises this dog or knows how she came to be dumped here we would urge them to get in contact with us.”