My husband's grandmother is in the process of dying right now
I wasn't sure if I wanted to bring my girls to the hospice to see her, and having to deal with the questions, but I ultimately decided that was selfish and the girls have been up to see her a few times, both with and without me. When my DD1 (4yo) asked me "When is great grandma going to go home?" we talked about death. I explained it much the same way that many of the pp's have. DD started to cry and told me that she didn't want great grandma to die and that she'd miss her. We talked about that for a little while, and the conversation naturally progressed to other people dying, and she told me that she'll miss me when I die. It sounds freaking morbid in print, but it was so sweet.
Anyway, I told her that I don't plan on dying for a really, really long time, and that I plan on being here to see her get married and have children of her own if that's what she wants to do. That seems like forever away to her, so she's okay with everything now. But she still hits me with "Mommy, I'm going to miss you when you die. And Daddy too." every once in a while.
But, like, pp's have mentioned, it's part of life. She understands animals dying and even that often animals get killed for food, either for people or for other animals.Shielding her from it isn't doing her any favors, I don't think.Bluegoat
Our girls are exactly the same ages as yours! Congrats on #3.