You''ve always known that you and your baby are two separate creatures, but he hasn''t. To him, the two of you are one — he has no identity of her own. When you put him in front of a mirror, he doesn''t even realize that the baby he sees is her. But this month he''ll make a huge mental leap and finally understand that he''s an individual, with his own body, thoughts, and feelings. This jump in understanding opens the door to his growing emotional and physical independence, which will take years to fully develop.