no
Yes. The longer you hold in your feces, the harder it becomes. That can lead to constipation, or if you hold onto it long enough, it could lead to fecal impaction.
Thirteen days.
Force your fecal matter to hold a crayon, then hold a gun to it's head and give it a coloring book. I've done it before - your feces will color up a storm.
You mean the rectum. The rectum is the tube that holds feces until we can expel the feces on the toilet. The anus is merely the name of an opening that has a sphincter of muscular tissue around it to hold the anus closed. By saying feces "enters" the anus, you're meaning that feces is already partway out of the body because the anus does NOT "hold" anything. The rectum does.
For the same reason human feces does - Rats are omnivores. If a human and a ratty both ate lasagna for three days straight their feces would smell the same.
63527
It depends. If they are in a container, it's mostly up to how much she works out. If they are in a container, it will primarily depend on how large her hands are.
about 2-3 weeks
Long, stringy feces can be a clue in informing you that your goldfish has constipation. You can know this when the feces do not fall from the fish right away. To cure this, I suggest that you feed the goldfish the insides of boiled frozen peas for a few days. Eating too many fish food that are full of protein can be the result of constipation, like pellets.
As feces remains in the large intestine, the large intestine is removing water and recycling it into the circulatory system. The longer the feces is in the large intestine, the more likely it is to have less water in it when it makes its way out.
Yes, most of the time it does. The intestines hold the feces (poop) as it moves through the lower digestive tract on its way out of your body. It would only be empty if you haven't eaten solid foods for days and usually you'd also have to have used laxatives or enemas to completely clear it out (small amounts would likely still be present even then).