The incident was captured on camera in Parsloes Park (credit: RSPCA)
A witness captured the man on camera carrying the small white Spitz-type dog in Parsloes Park on Monday, 29 March.
RSPCA inspector Chris McGreal is looking into the incident and appealing for witnesses or information.
He said: “The man – dressed in a black hat, black jacket and dark-coloured jogging bottoms – was seen carrying the small white Spitz-type dog by its collar across the park before getting into a black BMW.
“We’d like to speak to the man pictured or anyone who recognises him or the dog.
“We’d also like to speak to any witnesses to the incident. Anyone with information should call our appeal line on 0300 123 8018 and leave a message for me.”
To help the RSPCA continue rescuing, rehabilitating and rehoming animals in desperate need of care and investigating animal cruelty, please visit the RSPCA website or call their donation line on 0300 123 8181.
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Tags: Dagenham, Parsloes Park, RSPCA, Barking and Dagenham