Yes, cats will usually adapt quite well to using the same litter box. That being said, it's still a good idea to have more than one litter box in the house, though both cats will most likely use both boxes.

Cats often like to defecate in one box and urinate in another, so multiple boxes will make your cats less likely to eliminate someplace else.

A good rule of thumb for litter boxes is that you should have one more box than you do cats.

My new kitten won't use the letterbox

Question

I got a kitten two days ago, and she hasn't used the letterbox yet.

What's wrong?

Answer When cats are thrown into an environment where they're nervous or uncomfortable, they can hold their urine and bowel movements for up to three or four days. Your kitten may be fine physically, but still adjusting to her new environment.

To make sure that a physical problem isn't keeping your kitten from using the letterbox, however, you should have her examined by a veterinarian. This is a good idea with any new kitten, because many conditions are much easier to treat if caught early.

Can you give me a remedy for my cat's constipation?

Answer

Unfortunately, there is no simple answer to what seems like a very straightforward and simple question. Constipation in cats is not a disease in and of itself. Rather, it is a sign or symptom of another problem. Causes of constipation will vary depending on the age and overall health of your cat. Sometimes the problem is as simple as a food intolerance or a diet that is insufficient in fiber. Most often, however, constipation can be indicative of something else that is going on.

In older cats, a common cause is a difficulty in maintaining adequate levels of hydration. This can happen for a variety of reasons, but usually low hydration levels are due to problems with the kidneys-they can no longer properly concentrate the urine, and an overall loss of fluid occurs.

Another possible cause of constipation in cats is a disease called "mega colon." Mega colon is a muscular disease of the large intestine in which the intestine cannot contract properly, leading to a backup of feces and thus, constipation.

So you see, there is no simple remedy for constipation without finding out specifically why the cat is having trouble with its bowel movements. Your cat should be taken to a veterinarian for a complete physical. The doctor may recommend some tests based on what he or she finds. Reasonable tests include blood work to check liver and kidney functions, and perhaps X-rays to look for mega colon. In the meantime, a high fiber diet can be fed to help promote intestinal (colon) motility.

Why is my cat's urine red?

Answer

Most likely, your cat has a urinary infection, inflamed bladder or urinary tract, or bladder stones. These problems are relatively common in cats; their bladders can become inflamed from bladder stones or for other various reasons, and the inflammation can lead to a secondary infection.

Your cat should be examined by a veterinarian, as urinary inflammation and infections can cause crystals to form in the urinary tract, which can be lethal. (See Urinary Tract Infections.) Your veterinarian can also examine him for signs of other problems that could cause him to have blood in his urine, such as kidney disease.