58,000 Dead Dogs

58,000 or more stray dogs were killed in Baghdad in the span of three months by the government to protect it's citizens from animal attacks. After reading the article I realized that this happens way too much. I mean in Hong Kong they drove all their strays into the sea. The SEA! How sick is that? Personally this is like saying "We have too many homeless people, let's throw them in the sea." So this raises the question of the day, is it okay for governments to kill stray animals when there is an over population? Why and why not?