A F-150 wouuld be good enough to haul 1 horse, its a 1/2 ton so basically a car with a box on it. A 3/4 ton is made for heavier loads and for hauling. You could put overloaders or airbags on a 1/2 ton to make it the same as a 3/4 ton for appr. $300.If you want to haul more than 2 horses at a time you would need a 1 ton (F-350)