A man who attacked his pet dog with a Samurai-type sword and left it to bleed to death has been found guilty of causing it unnecessary suffering.
Peter Dibden, 39, of Braid Crescent, Billingham, Teesside, denied attacking the four-year-old bull mastiff, Max.
He claimed the dog had run on to the 18-inch blade.
Teesside magistrates on Tuesday fined Dibden £900, ordered him to pay £600 costs and banned him from keeping dogs for life.
The court heard how police were called to Dibden's house in May 2005 after his girlfriend feared he would harm the dog.
They found pools of blood across the kitchen, living room and utility room floors before finding the body of the dog with blood oozing from its mouth.
It had suffered a six-inch (15cm) stab wound to its neck.
Sgt Neil Taylor said in evidence that Dibden had been very agitated and his eyes were glazed over.
He said: "He appeared to be under the influence of drugs or alcohol. He didn't speak. Kept pacing up and down. Eventually he did speak. Just said he was messing about and he walked onto this."
A quantity of Class A amphetamine was recovered from Dibden's clothes.
After the hearing, RSPCA Insp Mark Gent said: "This was a shocking case to investigate.
"I know the magistrates must weigh up the mitigation put before them, but I can't help thinking of the agony that dog suffered - and the fact the Dibden just stood there and allowed him to die. This was a tragic case."