What comes to my mind are several things...
1) Huskies do not usually behave that way (well, they LOOOOVE smaller "prey")
2)Is it possible they thought it was a wolf???
3)If the animal slipped loose from the collar, I assume that this dog was on a walk? Didn't the owner run after him? Shouldn't they be there on the scene, too?
4)If the dog was tied up outside, how often is the dog like that? Perhaps that contributed to the dogs aggressive behavior??
5) If an animal is on someone property attacking your animals, you can shoot it. I know it was the officer that shot it, but just saying, If the homeowner decided to shoot it, no one would be wondering "why didn't they use a tranquilizer gun?" cause NORMALLY people don't have those things on hand. Just a consideration...
6) Have they checked the farm animals for wounds or any evidence that this dog was actually attacking them?
7) Not really that important, but did the dog live on a farm as well?
8) a HUSKY got away, there was STRONG possibility that the owner of the dog wouldn't see him again anyways! used to own a husky... they run and don't come back! (Our husky didn't run away, we just knew to be careful with him- he lived to be 21!!)
9) did the animal control officer even have a tranquilizer gun? Now, don't they need to measure the amount of it before they shoot it? Is the animal control officer equip to do that? i don't know a lot about this, so I may be totally off...
I'm an animal lover currently trying to find a dog for us to adopt (we have small kids and allergies, so what we are looking for is specific), but if an animal attacks another animal on the victim's property, that animal is definitely at risk of being shot