My DS is 3.5 and for the past few months has become obsessed with Thomas The Tank Engine. His train tracks and trains are all he wants to play with. He also loves to watch Thomas dvds and read Thomas books and he can now recite chunks of the stories while playing with his trains. He talks about Thomas constantly and says he misses his train track when he goes to pre-school.
Is this normal behaviour for this age? I am trying not to worry too much as other than this obsession, he is a very typical little boy.
Thanks in advance for your advice