Almost forgot !! When the bike is on the kickstand and the dog gets just a little to the rear of the trailer axle, the bike goes up in the air! The only way to stop this is to have the crate end at the axle. I only have a 30 lb. dog. If you have something heavier, get a friend with a video camera when the dog gets into the crate, really fun, if the door is at the rear. The bike will leave the ground.