Thanks dair2dv...
Huron you should read the whole thing on the link you provided. Also you can do to this link http://www.rsscanadaimmigration.com/en/citizenship/dualcitizenship.php to read more.
"Not all countries offer or accept dual/multiple citizenships. Each country has discretionary authority as who it considers to be a citizen. For individuals who wish to maintain citizenship in their country of origin, they must verify with the Embassy of their country regarding the rules of citizenship. This should be done prior to applying for Canadian Citizenship. Certain countries automatically sever citizenship rights to persons who have been granted citizenship in another country, even if the other country accepts dual citizenship. Many countries do not recognize an individual’s new citizenship. Generally the citizenship law that would apply to an individual’s case would be the law that were in effect on the date of obtaining (birth, marriage, parents’ birth or marriage, naturalization est.)"