The RSPCA has released video showing a man appear to deliberately set his dog on a pet cat.
The man, who is wearing a cap and hooded jacket, can be seen approaching the home in Woodlands Crescent, Walsall, with his lurcher-type dog on October 23.
He then points a large light towards the cat, which is sitting on a wall, apparently to draw the dog's attention to it.
The dog then pounces on the cat and a brutal attack follows. The cat dies.
We've chosen not to show the full extent of the attack in the video below, but you may still find it distressing.
Gary Truefitt discovered the footage when his cat Cleo, who he had owned for eight years, didn’t come home the following day.
RSPCA trainee inspector Fiona Howell said: “This is an extremely disturbing incident and we’d like to find out who this individual is as soon as possible.
We believe there may also be offences of ‘lamping’ shown here and are also liaising with the police."