An Adelaide man has pleaded guilty to multiple counts of taking part in illegal dog fights.
Benn Hamilton stood trial on Tuesday in Adelaide Magistrates Court on 16 charges related to taking part in a prohibited activity but admitted to 12 offences.
The court was told RSPCA inspectors found six American pit bull terriers chained up in the backyard of Hamilton's home.
Prosecutor Marie Shaw said the dogs were aggressive, and had fractured teeth and other injuries consistent with fighting.
Hamilton also admitted to possessing various equipment including shock collars, steroids and other drugs.
It was alleged the 39-year-old would himself tend to any wounds his dogs suffered during fights.
He also had books and DVDs about dog fighting.
"This is abhorrent conduct." Ms Shaw said.
Magistrate Kym Millard said a report on the dogs found they were capable of doing severe damage when biting, and were so aggressive the only choice was to euthanise them.
Hamilton was jailed for seven months.