Merriam-Webster defines Euthanasia as the act of killing the hopelessly sick or injured in a way that doesn't cause suffering for reasons of mercy. In common usage, this is exactly what euthanasia means: a painless means to relieve persistent suffering when other options are not available. The interests of the individual whose life is taken provide the reason for the action. Killing an incurably ill person, then, out of concern for her suffering is euthanasia. Putting a healthy individual to sleep because it would take resources to feed her, or as a means to free-up space, is simply "killing." To label this action as anything other than killing is a purposeful, self-interested, confusion of the language.
The new West Valley City (Utah) Animal Shelter, currently under construction, will have a gas chamber for euthanasia. Given the definition of the word, it is a patent misnomer to label killing over 2,400 companion animals annually primarily for reasons of "space" and "financial resources," euthanasia. However, I do not mean to imply any moral judgments. Given the context of limited resources and our society's inability to control our selfish desire to "create" a dog that better satisfies that which we get a passing pleasure from today, the decision of shelters and rescue organizations alike to kill some animals in their care is rational. (However, a "no-kill" revolution is beginning to challenge some of the assumptions that are used to justify all this killing.) My intent is merely to illuminate the erroneous use of the word euthanasia and force some recognition of what we are actually doing: killing. The interests being considered are our own. The animals' interests are but a passing thought along the way to the execution chamber.
In the case of animals, then, our understanding of the word "euthanasia" doesn't seem to fit the actual definition. However, "painlessness" does seem to be fundamental, which means that we are left with a decision: Since we are killing, for the most part, perfectly healthy animals simply because the habits of our species result in millions of unwanted "pets," should we take their lives painlessly, even if we are inconvenienced, or does their suffering just not matter at all?
The answer ought to be clear - a comfortable death is the least we can do for all these helpless animals. Would you expect anything less for your beloved dog? My family rescued a dog from "death row" several years ago. He was our companion, a unique individual, and a devoted friend. And without our intervention, he would have had to struggle against death by suffocation.
The use of the gas chamber should raise serious questions. Those who have witnessed the killing of animals by what is essentially suffocation generally describe a "desperate struggle," "mournful wailings," and what can only be understood as fear and desperation. We have an obligation to these animals. Forcing a fully conscious animal into a small chamber in which she will struggle for her last breath shouldn't be an option. There is a reason why the "gas chamber" provokes so much horror in us.
The American Veterinary Medical Association and the National Animal Control Association, among others, have all determined injection of sodium pentobarbital is the most humane, safest, least stressful and most professional means of killing these animals.
Some may argue that since we do, as a matter of fact, kill these animals for our own purposes, their suffering is really a non-issue in the end. I emphatically disagree. If we must kill, then we must do so with compassion.

