Don't get nasty about cats. I have one, and she's pretty cute. She's playful and very friendly.
Dogs on the other hand...NO
He lays sooo many "landmines" in the back yard it's not safe to play there anymore. My 6-year-old sister once stepped on one, and I had to clean it off. At least cats go in one location that we can't accidently step into.
My little brother's dog barks at everything. If a tree blows in the wind at night, he will bark and howl until his teeny little dog brain realizes that its just a tree. His dog also has a nasty habit of biting me when I wrestle with my little brother. The dog has given me...at the latest count...69 cuts and counting. He also has the tendency to do something I can't discuss. But I will put it this way: he was spayed and yet he still thinks he can do it.
Not my little one-year-old kitten. Whereas the dog is down at the front door, barking his mouth off all night, che crawls into the little bed I made for her and actually sleeps. I know because that little bed is in my room, on the ground. And cats smell good, unlike my bro's dog, which smells like the garbage can every day, even after baths. And, no, he doesn't get into garbage...often. There was once where he tore up a while trash bag. And our trash cans have a fence around them.
(By the way, as I write this, my bro's dog is out back and barking at who knows what. I do. It's nothing.)
Anyways, cats also don't dig holes in the back yard. Unlike some unappealing pooch I know...
And my kitten has claws and yet doesn't scratch anything, so you can't get her on that one.
(Out of breath) In conclusion...
Cats: cool and comforting

Dogs: ...WHAT is that smell?? Oh, yeah...
Dogs stink!