how to train your puppy to stand with it's back feet?

It is fairly easy to do if the dog is still young. All you have to do is hold up a treat and encourage the dog to come up to get it. The slowly step backwards and further away. If the dog is old don't do this it will hurt them. Dogs are not really meant to walk that way so unless the dog is very young, this is not a good thing to do, also forgive the dog if after it gets a few years later it does not want to do that trick anymore.