There should be consequences, and this kid should be closely investigated. If he has a track record of animal abuse, he should be placed on a firearms-disqualifier list.
From a Fox News story...
You don’t get to shoot our children,” Marceno said during a press conference after the shooting. “You bring deadly force in this county, we are going to kill you.”
https://www.foxnews.com/us/florida-boy-arrested-alleged-threatening-text#&_intcmp=hp1bt4,hp1bt