Don... "It's a hell of a long way back in this thread, but from what I can recall, I said that Canada didn't feel the need to exterminate them."

There is debate over that. One is whether the government deliberately distributed small pox infected to plains (and other) tribes.*

Of course, I am assuming you are referring to slaughter by military forces (or, as some history books call it, war). The Northwest Mounted Police and British Forces, to my knowledge, never engaged in such practice. I assume this was a concious decision made by the British Parliament after a logistical analysis by their military commanders in the field. Of course, the Brits did employ some tribes to pursue such practices on other tribes.*

Please note that I have a very limited knowledge of USA and CAN history in this regard.

* I would hasten to add, in both istances, that these (most - again, debatable) took place long before the US military engaged Native Peoples.