Not sure how the 2018 Rangers are, but my 2015 full size 570 ranger bed gets very warm/hot for my black lab. I didn't realize it at first, but that engine right under her about cooked her one day a couple years ago. I ended up getting some of that exterior sheathing insulation board from Home depot and cut out a piece that fits my whole bed then I put an old rug on top of that and keep lots of drinking water for her on our rides now. Don't know about you, but my dog is my bud and I felt bad that I bout cooked her. Something to think about.