Feel like I'm finally falling back to earth just now after our pup's first couple of months with us. Honestly it really was like having a toddler, but one with no sense and no nappies.
Ours is a bit madder than the average puppy but still. I had never owned a dog before and regardless of the many, many chats I'd had with dog owners, it was a huge shock.
We have got there in the end [quickly touches wood...] and I now love him but would happily have sent him back if it had been possible for some weeks. Still feel like my life has been turned upside down but the difference is I can see it's worth it now.
So just a warning to those thinking 'oh we'll get a cute little puppy" to be aware of what a challenge it can be.