Robert Habermehl was found guilty of willfully causing pain and suffering to his then-girlfriend’s cat in September 2009.
The assault left the cat's intestines hanging outside of its body, and officials determined it had to be euthanized.
Brad Nichols of the humane society says it's not often that people are sent to jail for hurting animals.
He says he can only think of a handful of cases.
During his sentencing hearing, Habermehl was taken to hospital after telling the judge he was having a heart attack.
Habermehl, who represented himself in court, told the judge it was his fourth coronary episode in two weeks.
The hearing was rescheduled.
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