My dog

I recently obtained a dog...and it isn't big or anything like 2-3 feet big and its like 3yrs old. So recently it was just last week! First we had some trouble that wiht the dog like why are u whining!? SHUT UP! And he ran around alot but now its all good, he whines less, eats some, and doesn't run at you. He even knows how to sit, lie down, roll over, stay, come, and attack! His names is supposed to be Jenkens, but we thought it was Jinkers so thats his have name...his other name is Fatty...not so sure how that happened but i jumped on board and it's going to be officail soon!