Authorities in Missouri are looking for a 24-year-old man who allegedly abused his girlfriend’s 5-year-old son and 2-year-old daughter, along with the family dog.

Mason Williams faces a slew of charges including 11 counts each of child abuse, domestic assault and endangering the welfare of a child, plus animal abuse. According to a probable cause arrest affidavit, the alleged abuse occurred between April 16 and May 8 at the family’s home in High Ridge, a suburb of St. Louis.

Deputies with the Jefferson County Sheriff’s Office wrote in the affidavit that the incidents were captured on a camera in the home’s video. The first incident involved the family dog. Williams let the dog outside but it would not follow his commands.

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“I’ll f—ing snipe you in your God damn [inaudible],” Williams allegedly heard saying on the video.

As the dog runs past him, Williams grabs it by the neck and holds it down. The dog is heard yelping multiple times, deputies wrote. A witness told cops Williams threw the dog against a kitchen table, per the affidavit.

The first alleged abuse incident involving the children occurred on April 28. Williams angrily entered the boy’s bedroom and “aggressively picks up” the boy by his collar and repeatedly hit the boy on his backside, the affidavit said. The victim was “crying hysterically,” cops noted. Williams also nearly suffocated the girlfriend’s 2-year-old daughter by shoving a cloth down her mouth.

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Other assaults occurred when the boy apparently wasn’t doing anything wrong such as watching TV or eating fruit, according to the affidavit. Cops said Williams repeatedly hit the boy in the backside during each assault.

“Victim 1 was screaming, crying and begging him not to be hit,” cops wrote.

During another incident, Williams allegedly grabbed the victim by his neck and started “violently shaking” his head while screaming at him to “f—ing stop.” The suspect then slammed the boy on a bean bag chair, the affidavit said.