What's the difference between the bird flu and the swine flu?

One requires tweetment and the other an oinkment.

More dad jokes you'll groan at

What kind of car does a sheep like to drive? A LamborghiniHow does a penguin build his house? Igloos it togetherWhat do you call a fibbing cat? A lionTwo whales walk into a pub. They take a seat at the bar and the first one turns to the bartender and says: “Whhhhhoooooaaaaaeeeeeyyyyiiiiiaaaalllllllooooaaaaauuu?” The second one turns to the first and says, “Shut up Fred, you’re drunk.”What do you call it when a cow grows facial hair? A moo-stache.What do you call birds that stick together? Velcrows