hmmm that's weird. So did this guy.
http://www.news.com.au/story/0,23599,24000291-421,00.html
http://www.abc.net.au/news/stories/2008/07/14/2302529.htm
But his ice cream was made in Ausralia. Since you're in canada, I doubt your ice cream came from Austrailia. How strange is that!
Anyway, you definately sue Nestle, the farmers, and the cows the ice cream's ingredients came from. You could be famous too, I'm sure it would all over cnn, or bbc news if you report it to them.