I would suggest checking out vinyl plank "laminate" flooring. I just installed some in our TT. I'm thrilled with the product and results. It's only about 1/8" thick so it doesn't interfere much with door sills, cabinet doors, etc. It clicks together like regular laminate and cuts easily using a chop saw and table saw. Super easy to install overall.
The biggest problem I had is that trailers aren't really built that well and not much is straight, plumb, square and level. I had to scribe a lot of the perimeter pieces to maintain an even 1/8" gap around.
The brand we used is called Aquaproof and it's fairly new on the market so I don't know how easy it is to find. The best thing is that it is 100% waterproof so you don't have to worry about wet dogs and spills. For those who might consider the vynil stuff, check out reviews on the 'net. I read a lot of negative comments about the Home Depot product.