Bolt was my uncle's horse, and he passed away earlier this year of just old age I believe.

While the death is definitely sad, at least he still had a long life, and was with a family that cared for him and loved him.

This is still a sad situation, but death happens and it's not a happy time :(

That is fully understand and its hard when you lose part of the family. I am sure you had many great memories with this horse, but remember he might be gone but never forgotten. :)