Minnie knows lots of objects and we did this by just repeatedly saying the name as she held it, over a week or so she was soon able to go and fetch an item or a toy. Just try to keep it short, consistent and not too similar to anything else especially a command.
Every frisbee is called that, every football is "big", every squeaky ball is "squeak" and tennis balls are "ball". We can show her a specific one, and hide it and she will come back with the right one even if similar items are available.
I also think some dogs are just more tuned into this type of thing.
Theo has more of a grasp of the names of toys although doesn't always pick the right one.
Digger however doesn't have a clue. If you ask for a toy by name he just sits and looks confused and licks you. Generally he doesn't pick up on the names of things etc round the house in the same way Theo does.
Indy knew loads of names - of toys, of people, of cats and dogs he knew, of rooms even :love4:
Moss and Millie just don't have a clue! :roll:
Indy was the academic one, Moss is the sporty one, Millie is the pretty one :lol: :lol: