It is like a puppy that has not grown to adulthood, even though it has grown in size, and even though it has grown incredibly tall in boys, and even if it is theoretically adult according to its age and the maturation stages of dogs. Flynn is like a puppy.

He has the enthusiasm of a puppy, he runs like a horse jumping with his high legs, clumsy and cheerful, he smells here and there, and wherever you call him, he runs to you with confidence and naivety, like puppies who are used to following someone behind because no matter how much they want to play it independently,  It simply is not. It's a baby. 

When he comes galloping to you, you pat his head, and tell him to sit and sit down, with a smile up to his ears. He sits like a good boy, standing like a clarinet, and waits for his cookie, and then runs again, and then calls him again, and comes, etc.

He sits for half a second. So far he has learned, no more. No one has taught him anything more. Sit down and stay, for example. And it's generally like someone has taught them things, but things that are for puppies, not adult dogs, to learn. Rules of behavior of adult dogs is as if he has never learned, it is as if someone did not know how to manage his development, and let him be a puppy, with all the negatives that such training can have. 

Flynn loves games. He can run like a puppy, catch a ball countless times. He runs, catches it, brings it right next to you, and chews it. You throw it back at him and he goes back to catch it again. He has a great need to let off steam - the first time we took him out he found a brick, and he caught it and brought it back and forth and then tried to chew it, and so we understood that he has learned to play with toys, and that he has a lot of need to play, so much so that he will find anything that looks like a game and will treat him like a toy. 

It is a dog that has a lot to give, in joy, in play, in devotion. And a lot to get. The most important thing to take away from his new home are some rules of harmonious cohabitation, and boundaries that no one has ever taught him.