How secure is a Yurt in wild country?

[wannayurt]

Just joined this forum to learn more about yurts. We have property at the edge of West Yellowstone Park. Plenty of snow and plenty of wildlife. We are in the process of taking down a 110 yr old homestead and when that is finished we will have a level footprint on which to use for a cabin, or a yurt. I love the idea of a yurt and the cost difference between building a cabin. My question is the security of a yurt against the wildlife. There are grizzlies, wolves and Moose seen close, alth' we have not encountered them. Would it be easy enough for them to tear into our yurt if they so desired?
Thanks for any help with our decision.
Wannayurt
Utah