If you want to share the miracle of life with your kids, you don't need to let them watch the birth of puppies or kittens. You can get them set up to watch brand new seeds sprouting quickly and inexpensively - and tiny plant shoots don't claw the couch!
Tips for Hardy Gardeners: the miracle of life but cheaper and less messy

Puppies: PentaxianK1ii/Flickr, Plants: Markus Spiske/Unsplash