Arcangelo Caressa, Bruno’s trainer and friend, made an ominous promise to the killers after he found the seven-year old bloodhound in a pool of blood on Friday.

Bruno, a seven-year-old dog known to help find missing and vulnerable people, was found dead in his shed in Italy. It was later revealed that he died from internal bleeding after eating sausages laced with hidden nails.

The death of Bruno, the Italian bloodhound who helped save nine people over his career, is believed to be a revenge killing against his owner.