If I have a male cat at home, is it better to adopt another male or a female?

The answer to this question varies considerably depending on the personalities of the cats. Example: If you have a very shy cat, it's best not to get another that is aggressive. Your shy cat will feel threatened and hide. Try to match the personalities of the cats. The highest incidence of urine marking or spraying comes with bringing an adult female cat into a household with an adult male cat. The male may react by spraying.