Sapporo city killed a house cat by mistake.
2013.6.3 Sankei News
Sapporo-city announced that an animal welfare center in Sapporo received a cat from the police station. The veterinarian in this center found the collar of this cat after they had killed it. They apologized the owner of this cat.
Sapporo-city said that the cage was too small, so it was difficult to check the collar. The staff of this center had heard about the collar from police, but forgot to mention it in the document to the veterinarian.
Furthermore, when the veterinarian opened the cage, this cat threatened. The veterinarian decided to kill it. After that the veterinarian found the blue collar.
Right after the killing, a woman called the center and told them her cat was lost. The collar and the characteristics were consistent with those of the euthanized cat.