I would never compare how I feel about the loss of my pet to how someone else feels about the loss of anything.
But to me, my animals are my family they've been there when family have not. I lost one dog in September and another in Feb and am still grieving over them. I was sadder about them passing than a family member(I know I'm a horrible person). But that is me personally, I don't know how it feels to loose a child, and hope I never do, but my dogs are my everything!