Putting down your dog is the hardest thing I've ever had to do. Long story, and makes me cry to this day....
We had a chocolate lab/mix named Lucy that we got from a rescue when our daughters were about 10 and 8. She was great.... Took her to the beach every morning, no health issues, she was about as "perfect" as a family dog can be.
Because my wife and I both worked full time(in the office pre-COVID), we thought we'd get another puppy to keep her company, so we rescued another Lab/Shepard mix(Daisy).
One day, out of the blue, Lucy started having issues going to the bathroom. We took her to the vet, and found out that she had a prolapsed urethra(look it up, its sad and gross). They told us that there's not much we could do for it. We had her in diapers for a couple months, blankets all over the house, etc... Finally called the vet again and they told us that she should probably be put down at this point. She was only 8 years old. This was over a holiday break, so we couldn't find anyone to come to our house to put her down, so we had to make an appointment to take her to the vet(walking disatnce from our house).
We were already in tears the morning of, and as we put the leash on Lucy to walk her to the vet to be put down, Daisy sat at the big bay window in the front of our house and watched Lucy, my wife and I walk Lucy away. The saddest part was that Lucy was just fine mentally, smiling the whole time...
We laid down next to Lucy as she was given the medicine and I bawled like a little baby(this was only a couple years ago).
Daisy, the puppy, has never, to THIS day, stopped sitting at the bay window waiting for her "sister" to walk back home. As much love and happiness that Daisy gives us, I can't help but think she's just heart broken.
Daisy is 5 years old now, still looking out the bay window for Lucy, and just went through a cancer scare of her own. She also has a little "sister" now, Piper.
This is Daisy and Piper, yesterday....With Daisy staring down the sidewalk where she last saw Lucy.