Position your puppy on the floor with something behind him to stop him going into reverse. Hold a yummy treat in your hand and in front of Puppy’s nose. You will now have his undivided attention. Move your hand down and back between his front paws. this should encourage him to lie down for the treat. This achieved, give the command “Down” and praise him lavishly. Practise this a couple of times at intervals throughout the day, and you will soon have a puppy who goes “Down” on command.
This is not to be confused with the command to get off furniture, which is “Off!”