[header] How to train your dog to roll over [title] Make sure your dog knows how to lie down. [step] This is an essential first step for completing the roll over trick, since the dog has to be lying down to perform it. If your dog doesn't respond to the " lie down " command, train him to do that first. 
[substeps] You can also start by letting your dog lie on his side. This may help him initially learn to roll over.