A man who savagely beat two alpacas to death in Queensland should be jailed for a year, says the RSPCA.
Queensland's attorney-general on Wednesday appealed the non-custodial sentence given to Wayne Charles Hartwig for his brutal act of animal cruelty.
Hartwig, 20, and a male teen who cannot be named, threw rocks at the animals, whipped them with a hose and beat them with a metal bar at a school farm north of Brisbane last October.
The alpacas, named Harley and Harrison, died after the attack, which was caught on CCTV.
In April Hartwig was sentenced to six months' prison but released immediately on parole.
He was also banned from owning an animal for two years.
The juvenile was sentenced to 12 months' probation and 80 hours' community service.
Attorney-General Jarrod Bleijie ordered the appeal of Hartwig's sentence a day later, calling it manifestly inadequate.
Queensland's Court of Appeal reserved its decision following a hearing on Wednesday.
Hartwig was not in court.
Outside the court building RSPCA spokesman Michael Beatty said jail time was warranted because the crime was so horrific.
"We would hope perhaps a period of one year in prison would be imposed," he told reporters, adding that there had been vast community outrage over the incident.
RSPCA chief inspector Annabel Buchanan said there needed to be stronger deterrents for this type of crime.