A 22-year-old former Texas A&M University student will serve a total of nine months in jail for torturing a horse to death following a heavy night of drinking.

Kenneth Ryan Peterson was found guilty Thursday of cruelty to animals after less than 15 minutes of jury deliberations.

The same jury was set to decide his sentence, which could have been up to two years in state jail. But in a plea agreement, Peterson admitted to also being guilty of an additional state jail felony charge of criminal mischief.

As part of the agreement, Peterson will serve six months in a state jail for the cruelty to animals charge. After serving this sentence, he will serve three months at the Brazos County Jail as part of five years’ probation stemming from the criminal mischief charge