Ask the family.

Only personal experience is this:

A couple of months ago,  my cat died.  Not an accident-- expected-- cancer.  I cannot look at my photos of him right now because I still miss him so much.  But I am glad I took them and they are there.  I have not taken them down.  I took one photo on his last day.  I adore the photo because it captures his fierce will to live.  The last month was all about balance -- honoring his determination to live while not letting him suffer.  I shared photo with the 2 vets who helped us at end and some friends. I will probably never put it on stock but some day, it will be included in my art portfolio.  I do not mind it if someone buys photos of him-- he was my heart and soul once in a lifetime cat.  The idea of others appreciating his photos, other than that very personal one, would make me happy.  I just would like maybe not to see them a lot as part of my personal life at this point in time.