experience with MRW pet carrier / travel in plane

Question
Hello, I'm manuel. First of all, thank you for your kindness to answear me.
I'm going to travel with my dog, male 7 year old, from Barcellona to Sevilla. People speak me about MRW pet carrier, they transport pets by the van/car. So i'm going to ask you if anyone have ever done some experience with them, and how do they work.

Also, i ask you an opinion or some advices for transport with the plane. My dog is a medium size, so he will not stay on board with me.

Thank you for your time!!
bye, Manuel

Answer
Hi, Manuel,

OK, I'm back.  Travel on airlines with pets who are too large to fit under the seat isn't the best - they muct travel in the hold with the baggage.  Please check with the airline to find out about fees, most airlines charge a full ticket price for this "service."  I would not take my animal that way.

MRW pet carrier, or van transport of pets: I have no personal experience with such.  ALSA Transport does not allow pets inside the coach, they must travel in a carrier in the hold with the luggage.  I'd be concerned about ventilation and exhaust, there.

Check out this link for info re: several of the bus services in Spain, you can find out about taking your dog on each Bus Service, here.   
http://gospain.about.com/gi/o.htm?zi=1/XJ&zTi=1&sdn=gospain&cdn=travel&tm=137&f=...

Good luck, Juli