Someone let several horses out of their stalls and into a common area where the stallions got into a fight.
Another horse was injured.
"The stallions are not used to being together," said Marion Anderson of the Olds College equine program.
"A fight will happen in order for one of the stallions to determine dominance."
The college says this is a case of animal cruelty and represents a serious loss to their equine program.
The RCMP are investigating the incident.
Olds is located roughly one hour north of Calgary.