Can I travel with my two horse in to mexico?

I want to plan a vacation to Mexico. I love my horses and cant go nowhere with out them. Can I take them with me if im driving? What do i need?

A really big car seat.

a lot of paper work, for a fee we transport horse across the U.S. and into Mexico.

How far into Mexico do you plan to drive? If you are just driving less than 100 miles , it may be ok...like into Baja, but other wise , do not do it. Mexican highways are not always very good...they vary gretaly. A long, very hot , bumpy ride would certainly not be pleasant for the horses. And , then , where would you board and feed them? The horses would be MUCH happier at home in the environment they are used to. If you cannot leave them for a vacation, then NO vacation.