We got a cat a couple of weeks ago. Similar to when we got our current dog (now over a year ago), and for that matter when we got Samson the Enormous Doberman back in the day, I was appropriately dubious at first, since (as usual) it's a hand-me-down/rescue situation, and I wasn't sure how well the wee beastie would fit into the family.
Turns out, he fits in perfectly. He's full-grown but not too old, I'm guessing 3-4 years old, and an indoor/outdoor cat; he lets himself in and out through the dog door, and thus far has always returned in one piece. He's really friendly, and has a tendency to cuddle up with me at bedtime, then shift down toward my feet, then disappear for a while, then return when my alarm goes off in the morning. So, it didn't take long for him to make friends with me, and for that matter with the rest of the family. Though the dog will sometimes bark at him in the back yard, trying to get him to come down from the kids' fort to play...
I browsed the Wikipedia article on cats today to figure out what to call his color pattern and breed, and as far as I can tell, he's a Turkish Van -- which explains why he likes to play with water.
So. Yeah. Cat.