Bam Bam, the bighorn sheep whose penchant for butting cars made him an international star, died of natural causes at Sybille Canyon near Wheatland on Thursday. He was believed to be 12.

Bam Bam was the last of the Sinks Canyon State Park bighorn herd, surviving a plague of pneumonia that wiped out the park’s sheep population in the middle of the last decade. Friends said he loved a scratch on the ear, Doritos and a good head butt...