Our Davey is now about 17 pounds and we expect at least another 10 LBS over the next few months. We take our boy on the train many weekends to Fire Island or up to Connecticut and up till now we've been using a dog carrier that can accommodate up to about 15 lbs. While on the train Davey needs to be in some sort of carrier that closes -- I am wondering what sort of portable carriers (not really crates that may be too big to fit on an empty seat) work well for their corgis. Ideally something that will also work when Davey needs to fly is also what we'd like to invest in. We appreciate any tips.