If you have a dog, you should not bring it to a party at the house of people who own two cats. Particularly if those cats do not like dogs. Here's why:
I got to a barbecue tonight just a few minutes after a couple with a new dog (a pound dog, so he was a year old, but very puppylike and very interested in the cats). One of the cats was downstairs, but, as I stood in the kitchen door, decided he'd rather not be downstairs anymore and used my foot to launch himself at the stairs. Awesome. The cuts were more dramatic four hours ago, when they were all bloody. Fortunately, the wife of the birthday honoree is a doctor. Ok, so, she's a pathologist - not necessarily the first doctor you look to in a trauma situation - but she set me up with some neosporin and some bandaids and all was good.
She felt really bad about it, but I don't blame the cat - I blame the idiots with the dog.