A classic saying for making a large mistake, also known as "screwing the pooch". See also Animals.
Funny excuse if anyone ever asks why you're late. See also Animals.
Caused by drinking water contaminated by human and/or animal feces (presumably including a beaver's), the symptoms of the ailment otherwise known as Giardia include loss of appetite, lethargy, fever, explosive diarrhea, loose or watery stool, stomach cramps, upset stomach, bloating, and flatulence. See also Animals.
I'm really good at it. See also Animals, Holidays.
No, really, who let the dogs out? See also Animals, Songs.
In other words useless. What does a male hog need nipples for? See also Animals.
In other words, your fly is undone. See also Animals, Clothes.