How could somebody be so careless?

When we got home from the swim meet today (or... the "lets sit under tents with holes in them, in chairs that are wet, in swimsuits that are cold and won't dry until the coaches will FINALLY call the meet) my neighbor's daughter's kid's puppy (or my neighbor's grandson's puppy I guess) was running around the cul-de-sac. It was raining and cold, and when I saw that our neighbor wasn't even outside, I was flabbergasted. So I ran over to the puppy and picked it up and took it up to the neighbor's house to ring the doorbell and give them back their dog. Nobody answered. BUT every car was in the driveway. I went to go put the puppy back in the backyard when Dad came outside saying that he had already tried that, but there must have been a hole of some sort that the puppy was getting out of. So, I wrapped the puppy in my arms and took him into our garage. I got a dry towel and wrapped him up (he was shaking he was so cold) and just cuddled with the adorable little puppy. Eventually, the puppy got restless so we started playing. He made me realize that MY puppy KJ isn't quite a puppy anymore! Dad came outside and told me to let the puppy go and go get changed out of my still wet and cold swim suit and bring my laundry down. It didn't take Dad long to realize that letting the dog back out into the cold rain wasn't an option to me. So he held the puppy while I ran up and ran through the shower. When I got back downstairs Dad had let the puppy into our backyard, and the puppy (who we still didn't know the name of, it didn't have tags) and KJ were playing and running around the backyard. Both dogs were sopping wet, so I grabbed a towel for each of them and dried them both off. The puppy acted like it had never been played with before, and made me sad thinking that he probably got neglected like my neighbors past dogs. We ended up seeing our neighbor walk outside, so we took the puppy back. He had NO idea it wasn't still in it's cage. (It's 1:00 here... what on Earth would a dog be doing "still in his cage" at 1:00 in the afternoon??) I reluctantly handed over the pup after telling my neighbor that we tried multiple times bringing it back and ended up taking it in and drying it off. Thinking he'd be appreciative. Nope. I asked him what the dog's name was (for future reference next time he's left out) and HE DIDN'T KNOW. He had to ask his daughter. Really? GAH!

How could somebody be so careless??