Little Lol Why Do My Big Dogs Think They Are Little Lol?

Why do my big dogs think they are little lol? - little lol

I have a chocolate lab and he is the sweetest thing. But if you sit on the floor and tried to get his fat ass into his lap! Or Trys No place in the car seat between the door and then comes the cat under the table and not appropriate. I do not know exactly how big are they? Does anyone take this dog?