the cabin filters for the 2008 sx4 actually isn't a filter unless LSM had expressly said that they put it in!there is a black cheese hole shaped thing that the car originally comes with that they are supposed to replace for you from the start.This is a worldwide problem known by suzuki that i found on different sx4 forums.They are actually supposed to have done it for free under warranty but if you get the filter search on this website sx4club.com and you should get instructions.I looked when i first got my sx4 to see if it was in and this is what i found.But call them first if you have this one and let them change it on your next service.
if this is what you have you could probably filter an entire pitbull with it but hardly likely any dog fur will be filtered by it.Let us know how things go.