Just thought this might make an interesting topic.
I start from day one of bringing the pup home. Things like 'sit' etc.
These two video's on youtube make interesting viewing:
This is a 4 month old GSD:
http://www.youtube.com/watch?v=OnfcYj9m7uA
This is a 10 week old lab:
http://www.youtube.com/watch?v=BJP9QCXhL1k
Impressive!! I don't think these dogs are being forced!
I think it should be remembered though that all dogs (and all owners) are different and can achieve different standards at different ages.
I know the breeder of my present dog (not a GSD) does not bother with the dogs until they are six months old as she says before that she does not have the patience! I think that is a little late - but then if it suits her I would not slag her off for it. She is the one living with the dogs.
What are other people's opinions?
Sue