Puppies, it seems, are easier than infants, at least if my ten-years-removed newborn recollections of our kids remain accurate. A puppy needs lots of attention, yes, but it can eat independently, move around by itself, and learn to go to the bathroom outside.
However, I've discovered the sleep deprivation can be similar. Until we've figured out Lucy's nighttime patterns, we're all a little on edge, sleeping with one eye open to make sure she's okay and not doing anything untoward.
And we're housetraining her, of course. So while we don't have to get up nearly as often as you do with a baby, at least with a baby you can stay in the nice warm house. Training a puppy means trekking into the rainy yard at 4:30 in the morning. That can take a toll on your state of mind the next day.
But, just like a newborn, Lucy makes up for it by being almost painfully cute. In fact, my wife Air figured out that our dog looks disturbingly like an Ewok.