There's a myth that cats don't pee all around the house, because they are trained to do their wastes inside the litter box, but cats are actually very territorial and it is very common for them to spry, especially on the couch or on the bed.

If you own a cat and a dog or more then one cat, it may be more difficult for you to find out who is the peeing one, but there are several ways to find it out. For example: did you know that cats urine smells different then dogs urine?

You can read more about cats peeing problem, how to cope with it and even how to get rid of urine smell at this link: http://cats-zone.com/blog/cat-behavior/cats-peeing-problem