I’m curious as to your “evidence” regarding the man’s intent, since there is no mention of previous encounters with the dogs nor of any disputes or confrontation between the two men.
From another source: “Deputies met with the owner Michael Bustamante, 28, who confirmed he let “Astro” a 2½ year old 65-pound boxer...”
It was the 65 pound dog he shot ONCE with a .22. Do you seriously believe he shot at running 65 pound dog and killed it with a single shot with a .22?