I own guns and carry guns. I have lived in AK since 1969. I have NEVER shot a dog even if they were off the leash .. And I've had dogs charge me if I was near their property... ( wolf hybrid ) .. So the justification for this complicated situation isn't there. 
The person who shot the lab sounds like a spoiled brat from Malibu, CA.
😳😧🙀😐😕