Here to vent a little (and to share how pets are so cool).
My mom was very attached to her dog(s). So much so that when I interned at her church after college for the summer and I introduced myself as her son, the response was, "Oh! we didn't know you had a son. We knew you had a dog, but not a son."
So her last dog was a Westie that she's had for about 15 years. My mom was diagnosed with Alzheimer's and has rapidly declined in the last year, especially the last 9 months. They dog is getting older and has lost its sight and is not doing super great, but was still a comfort and companion to my mom. We had to move my mom into a memory care facility in October because the Alzheimer's had progressed and her husband couldn't give her the care she needed (and was a little unable/unwilling to try). Within a couple of weeks of my mom moving into the facility, the dog's health completely fell apart and we had to put him down (it really did have the sense that he was holding on just for my mom).
Because of her attachment to the dog and her mental state, we asked the social worker how best to approach it with my mom - should we tell her, should we not, etc. The suggestion was to not directly tell her and just to reaffirm that the dog is well cared for and taken care of. We all talked (me, sister, and mom's husband) that we would follow the social workers advice.
Today - her husband told he that the dog had died, so she's super upset unnecessarily, My sister was able to redirect and hopefully she won't remember, but WTF?