we have had our dog for 3 years now, he was a rescue dog and when we got him, we had obviously bought toys for him, but he didn't know what to do with them and really didn't know how to play. How that has changed, he can now play hide and seek with me and knows to wait at the bottom of the stairs until my daughter tells him to go and find me, he will then check all of the hiding places I have used until he finds me. We also hide some of his treats and make a game out of him sniffing them out. He, despite have two beds of his own, one upstairs and one downstairs, still prefers to sleep on our bed during the day, but has now worked out that with a bit of scratching around he can pull back the duvet and actually get in our bed which I most firmly draw the line at and told him so, next day I found he had gone into the guest room instead and tried to get on the bed in there! He understands so many words and can dance and 'sing' also if he needs to go outside between walks, he will come and sit down in front of us until we ask what he wants, we then go through the list of possible things he might want until we get to wee wee, at which point he makes it clear we have found the right answer whilst he looks at us as if we are stupid and is saying at last the penny drops!