Hugo, one of our office pets, passed away a few months ago. It was difficult for everyone as we were used to seeing him on a daily basis. Time for grieving and sharing great memories we had with Hugo definitely helped the process along. My coworker wrote this piece honoring Hugo with tips as well for the pet owners once their beloved pet has crossed the rainbow bridge: https://www.petdoors.com/blog/dealing-with-grief. Hoping this helps a bit for other pet owners out there coping with loss.