Any pieces of media where Jason Voorhees causes harm to animals?
Completely non canon. Null and void.
Every morning at the crack of dawn, when he rises from the murky depths of Crystal Lake, a flock of chubby, bright-eyed bluebirds sing to him and whimsically flutter around his head like the beginning of Cinderella. He rests on a nearby log, peppered with moss and mushrooms and teeming with life, and a newborn deer stumbles up to him and rests at his feet.
Squirrels frolic in the treetops. A mother fox and her kits watch from a distance. The bluebirds hand him his mask and his trusty machete, ready to spread the word of abstinence to the sex-crazed youths invading his camp.
Ten miles away, Freddy is being mauled by a pack of bears. Nobody hears his screams because nobody cares.