For some reason my five month pup just got scared of riding in a truck. He gets so scared he trembles and vomits. I started all over today getting him comfortable with the truck bed and his crate. He is starting to run up ramp to take his place now and going in crate but what could have triggered this episode as I’ve never had a dog do this before in my fifty years of hauling dogs. And before y’all say I’m old I was driving around country roads hunting when I was eleven.