I am trying to write a paperabout the high rates of euthanasia in the south, specifically MS, but I am having problems finding articles about the actual amount of money shelters generally spend per year on both upkeep of animals, as well as euthanasia. I am focusing my paper on companion animals (cats and dogs). If anyone know of any scientific journal articles, or legit newspaper articles, please help me out!

I appreciate it.
Let me clarify, I have used several academic search engines, such as Academic Search Premier, ScienceDirect, and EBSCO, as well as the typical google and yahoo.