My DD was different, from birth to first 3 months she was calm easy going then at 3 months she started to change. As she's become more aware and alert of the world around her she has become strong willed and knows what she wants when she wants and gets cross if anything is in her way. She'll only cat nap in the day cause she doesn't want to miss out on anything. She doesn't cry really but she sort of shouts when she wants something like she is yelling out to us to hurry up and get our butts to her!