You can still have another child. At least he lived a long life. She’s in a better place now. When you’re ready, you can always get another dog. It’s been a year; maybe it’s time to move on. To be sure, these comments are meant to comfort, but they’re also a way of protecting the speakers from the uncomfortable feelings that somebody else’s bad situation stirs up. Platitudes like these make a terrible circumstance more palatable for the person saying the words but leave the person experiencing the adversity feeling angry and alone.