How do boy cats wee?

Sometimes, a cat will spray urine on certain items out of anger or frustration. If a cat is suddenly left alone after being used to spending most of his time with people or other cats, he may react by spraying urine. It is not really about retaliation, but is a cat's normal response to change and stress. If a cat becomes fearful such as if a large dog suddenly joins the household, he may also react by spraying urine.