[alaskayorkie]

If you're expecting any layovers at terminals, you might check ahead and see if they have any accommodations for dogs. At least one airport we've been to -- and I can't remember where -- had a place where dogs could walk around and pee without leaving the terminal.

But 10 hours makes it sound like you're on an international flight, so that point may be moot.

A couple other things:
* Some flight attendants are more tolerant than others over dogs. You might be able to put your carrier on your lap and cover it with a blanket. It helps the pup a lot if you can stick a hand in there and reassure him or her. Just DON'T fall asleep with the carrier open. That's why some flight attendants are less tolerant.
* Carry Nutrical. You probably don't want to feed a lot before the flight, and your pup may need some high calorie nutrition. That's a paste, though, so you might run into trouble with TSA. You might ask your vet for ideas and get a note if he/she agrees with the nutrical idea.