It's good news that the dogs are no longer "at large".

I DON'T feel it's good news that one of the dogs was shot... assuming it was not going after people.

I know loyal, gentle, large dogs... who have killed a small dog or a cat, that entered their yard. Killing small animals could be solely based on prey drive. They could be perfectly great with people. D; It's just a shame that their former owner was not responsible enough to keep them contained, and the dogs, and the pets they killed, are the ones that pay for it.