The People for the Ethical Treatment of Animals (Peta) charity have offered a £1,000 reward to help catch those who tied a dog to a tree and burnt it to death.
The animal, thought to be a Staffordshire terrier or Staffordshire cross, was found dead in a wooded area in the north of Kirkcaldy, Fife, last Friday.
"It is imperative that any community faced with sadistic and violent acts such as this takes measures to find the culprit or culprits and bring them to justice. Animal abusers are a danger to everyone," Peta spokesman Ben Williamson said.
Police can be contacted on 101 and the Scottish SPCA can be reached by dialling 03000 999 999.