Somewhere between the opening scene on the highway, where he hitches a ride with the old man and his arrival at the care home, Jonathan (Michael Landon) has had a haircut.
When Johnathan asks Estelle to watch his puppy, Michael Landon gets his lines mixed up. Instead of saying the puppy is ok at night when he is home and cries during the day, he says the puppy is fine during the day because he is with him but night is a problem. He then asks Estelle to take care of the puppy during the day.
When Jonathan Smith first applies for a job, Mr. Haskins asks him for references. Smith indicated he was from back east and did not know anybody. Later on Mr. Haskins is complaining about the cost of the flowers and plants Jonathan plants in the garden. Jonathan says not to worry since it came from a "friend". At that point Mr. Haskins should have replied "What friends? You could not even provide a reference."