Yes.Living on a farm I observed that cats,dogs, and cows all missed the presence of one of their own who suddenly disappeared and would spend hours searching and calling(crying?) for the missing one for a few days.Seeing a cat returning again and again ,while uttering plaintive cries , to where she last left a housemate who died makes one wonder about many things.
For the last twelve years of her life, my mom moved in with us, so we could monitor her health. Her beautiful, sweet Maine Coon cat [ ancient of years] came with her. Everyone adjusted to their new home just fine. When mom passed, her cat who would curl up under the empty chair at the dining table, when mom sat.
We tried to console her with extra attention and activity. But there she would stay under that empty chair. Two weeks after mom went to her reward, the cat died. I believe with all my heart that she died from grief, even though she was quite old for a housecat.