THis made me laugh, because I have a 2 year old CAG and he does exactly the same. He says, hello in the right ways and contect and if I or anyone else talk to him or one another in his vacinity, he would say what. If I shout at the dog he wil say, ok,ok,ok mommy. They definately know how to use the words in the right context. Oh and he also goes to the cage door, nips at the lock and say come take me out, open the door pleeeeeeez, I want to go to granny.