Tenho vários gatos. A urina do gato macho não castrado tem um cheiro completamente diferente da urina do gato macho castrado (o cheiro é muito forte e muito ruim).

A group of cats is referred to as a "clowder" or a "glaring",[19] a male cat is called a "tom" or "tomcat"[20] (or a "gib",[21] if neutered), an unaltered female is called a "queen",[22] and a pre-pubescent juvenile is referred to as a "kitten".
http://en.wikipedia.org/wiki/Cat

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Note added at 1 hr (2014-02-06 18:00:21 GMT)
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The intact male (tomcat) is likely to roam, fight with other males, and spray, and is of course, strongly

attracted to seek out and mate with intact females. Tomcat urine is particularly malodorous. Overall the intact male cat can make a most unpleasant household companion.

http://www.vcahospitals.com/main/pet-health-information/arti...