Its a sin to kill a dog

The poppy was unable to move as it lay just across the path from the enclosed bathing area behind the hospital. The mother and twin poppy were nearby watching as it lay whining in pain.
I couldn't make myself kill the dog, not least because of the big brown eyes staring helplessly at me. As it was only a matter of time, I called our maintenance department; a group of good people doing low jobs, including those that are considered bad by some.
Mr H, a Muslim, came with me and saw the dog and agreed that it would die but said it is a sin to kill a living being.
I asked about the colleague who had done it in the past. Mr. H informed me that he had been unwilling to do so since one of the last dogs he had killed had come back to visit him in a dream.
Mr H called the medical director who is a Christian. To him it would be a sin to take medicine from people to put a poppy to rest.
Next came another doctor, this time a Hindu, who suggested we take the poppy somewhere else where it could die in peace, it was better that way than committing the sin of killing a living being.
Next came a foreign doctor who, though she is from a country where euthanasia is practiced, didn't herself support it and so was unable to assist.
Regardless of who we were, we were unable to kill the little dog.