A Long Island pooch had his own way of protesting lax laws for dog killers: by pooping in the courtroom.

The canine was watching the case of Jose J. Galvez-Garcia, who allegedly mutilated his aunt’s 4-year-old cockapoo, Simba, in a fit of rage.

The defecating dog is a service animal for East Hamptonite Lois Watts, who attended Galvez-Garcia’s Friday arraignment in Suffolk County Court on felony animal-cruelty charges, according to a report.

Galvez-Garcia, 21, could face anywhere from probation to up to four years in prison on the charge.

“We’ve got to change the laws,” Watts told The East Hampton Star, which noted the stink created by her canine.