Pathetic, isnt it? We extend more compassion to our animals, than we do our fellow human beings.
There are some distinct differences:
1. Animals DO NOT have souls. The Bible permits the killing of animals, it does not permit the killing of humans for the conditions you mentioned.
2. Animals cannot communicate levels and locations of pain as humans can, this makes palliative care more difficult.
Since the beginning of time people have euthanized animals that are dying and in pain, the notion that it was okay to euthanize humans is only a few decades old and pushed by the leftist culture of death.
It's important to note that even the Nazis didn't euthanize anyone that they considered to be a human being.
It's also important to note that they tried to cover up the fact that they were euthanizing people. Why would they try to cover it up if they didn't know it was wrong? Only a handful of them were stupid enough to brag about it. Here are some of them.