Colin's imagination is working pretty well. He will spend quite a bit of time on the ground being a dog, crawling and panting. If someone is nearby then there is a good chance they will be commanded to join in with a very direct "doot" or "do it" in Colin language. He will feed and give water to his animals and have them be dogs as well. Hobie seems to be rubbing off on him. He also is working on his cooking skills. Whatever it is he makes he finds it to be tasty.
Besides his creativity he also understands most of what we say and will be able to respond a lot of the time. He also knows what he doesn't want and will communicate this as well. If it is us that he doesn't want to listen to then he will ignore us or go back to whatever he was doing right away. The 'time outs' have kind of started. He's not to happy with being moved and sat down in the middle of his mischief.
Here's a video of him joining in with his current favorite song:
