I can’t sit my pets down and explain to them what chemo is or that they’re going to have an invasive surgery and may get better afterwards. All they know is that they love me, but they’re in pain. You may question it for a long time afterwards, but if they’re miserable and don’t understand why then keeping them around is more for your benefit than theirs.

I’ve spent way too much money getting care for a sick, young cat because I knew the pain would be temporary and they could get back to their bonded half and recover quickly and I’ve had to put down a dog that could have lived a few more years because their dementia had become so bad they were confused and lost constantly, even when in the same room as I was.

Compassion and love are always important, but you can’t explain to them why they’re in pain, only save them from needless suffering.

Humans are already imposing upon our pets and depriving them of their autonomy, simply by keeping them in captivity. Any argument against merciful euthanasia grounded in concerns about how it is imposing are moot.

As for pulling human euthanasia into this context, do yourself a favor and don't. You might be surprised at how common euthanasia is in humans. At least in my part of the world, it's largely a wink-wink nudge-nudge situation, but it does happen with some regularity. Also for people who are actually suffering in decline, there are all kinds of supportive care options being provided that simply aren't feasible or economical for pets. There's also not really the potential for the same kinds of perverse intentions with pets as there might be for people. Like, the list goes on.

So, basically from either of those two perspectives, let alone the fact that both apply, the argument against euthanizing pets that you've presented fall apart.

Having said that, this is often not a simple and straightforward decision. But since we've already established that we're imposing upon them one way or the other, it really comes down to what kind of imposition do you want? The animal is going to die soon one way or the other. You can impose upon it and force it to experience the pain and fear and discomfort of its body naturally shutting down over the course of days, weeks, or months. You could impose upon it and decide to euthanize. What can you live with?

On a more personal note, I've had to have 2 pets euthanized.

One was a cat who managed to escape outside, it got hit by a car and then a neighbor's dog mauled it. Literally pieces of broken rib and punctured lung exposed as well as untold other injuries. No hope of recovery. The idea of letting it suffer another moment was not something I could live with and it was going to die anyway.

The other was a dog with congestive heart failure. There comes a point where there are no more medications and no higher doses that are effective. The animal literally is experiencing the sensation of drowning. They're terrified and in pain, exhausted, and suffering. The vet might be able to alleviate it a few hours or even a couple of days with a procedure to manually remove the fluid, but then you're just going to put the animal through this again and soon. I could not live with myself forcing the dog to endure that knowing there was another option.

Plus, I have seen the pet owner that refused euthanasia and wanted their pet to die a natural death. The dog had cancer. I'm honestly broken up enough just thinking about what I witnessed that I can't even bring myself to type it out. So I'll stop there other than to say I've seen people dying of cancer in their final hours -- there is a world of difference in those things, at least in modern times. The pet was clearly distressed, in pain, and suffering. The people are being made comfortable with drugs and medical care.

I always want my pets to die naturally of old age. It's very peaceful. I've only put a couple to sleep, and they had aggressive cancers.

I've had a few creatures put down. My grandmother's dog was in such bad heart health she couldn't really move around anymore. When the creature shakes and whimpers under the strain of standing up, and sometimes just randomly screams in pain, it's about time to make that difficult trip to the vet.

My old cat Spice lived to the ripe old age of 18, and then she had a saddle thrombus. Essentially a blood clot blocked her aorta where it forks to her back legs. Her back beans turned cold and blue, she couldn't walk right, she was obviously in distress, so we rushed her to the emergency vet where we were told at her age she probably wasn't going to survive any treatment, and that she probably had about 3 more horribly painful hours to live. She was actively dying, it was a question of how long do we let her lay there gasping?

I let it get about that grim before it becomes an option.

People keep elderly pets alive too long for selfish reasons.

Do you put down your elderly family members? It's really that simple...

I see a lot of good reasoning here but I can't get over the fact that I wouldn't choose the same for myself. If I can't see myself choosing death why force it on my friend? I have never judged someone for choosing to kill their pet who is in a terrible condition dommed to get worse however.

I just can't do what I wouldn't want done to me.

Cats will readily voluntarily starve themselves to death if their food isn't up to their standards.

Perhaps euthanasia is cruel, but the alternative must also be considered.

My cat died from some sort of cancer. We noticed blue welts growing from her face years ago, but the vet said that they were harmless, some sort of allergic reaction. They got bigger over time, and more started to appear. Tests were done, but the vets still said that it was nothing to worry about.

Over time, her personality changed. She was never really extraverted, but she still liked attention. Over time, she started hiding from people. She only came out to eat, then went back to hide again. We never saw her walking around like she did in the past.

The night when she died, she pulled herself to visit the bedroom, then crawled back out into the living room and curled up onto the sofa and waited to die there. We knew something was wrong when we woke up the next day because she left a trail of blood that led us to her. At that point, it was already too late.

In hindsight, it was clear - she was in constant pain for years. It was why she was hiding from people, why she seemed to start avoiding attention, why she stopped doing anything that she enjoyed. That night, she knew she was going to die, and she paid everyone a final visit before resigning herself to die on the sofa. It was an undignified, likely painful and slow death, that was preceded by years of debilitating pain. If she were given the choice, would she have chosen euthanasia? I'm not sure, but it feels clear to me that she knew she was going to die and was suffering for years.