The Scottish SPCA is investigating whether a cat that drowned was deliberately thrown into the sea in Dundee.
The cat was seen struggling in the water at Broughty Ferry Harbour at about 21:00 on Monday.
Despite a member of the public climbing into the water, efforts to revive the cat were unsuccessful.
An appeal has been made for anyone who may have seen someone suspicious in the area to contact the charity.
The SSCPA said they feared the black and white male cat may have been thrown into the water on purpose.
Animal Rescue Officer Steph Alexander said: "While this cat may have fallen into the water, Broughty Ferry Harbour isn't a place where cats typically wander.
"For this reason, we can't rule out the possibility someone threw him in as an act of deliberate cruelty."
The charity had responded after receiving a call from the public.
Ms Alexander said: "I tried to revive him when I arrived but there was just too much water in his lungs and, tragically, he passed away.
"Unfortunately, he wasn't microchipped or wearing a collar so we've been unable to trace his owner.
"It's heartbreaking to lose a pet and I'm sure his owner would like to know what happened to him if he has gone missing from home."