Final answer:
The 2-year-old boy is alert and acting appropriately. His behavior suggests that he may not have a fever. However, his withdrawal towards his mother indicates that he may be shy or uncomfortable with new people.
Step-by-step explanation:
Based on the described behavior of the 2-year-old boy, we can infer that he is alert and acting appropriately. His non-crying behavior suggests that he may not have a fever, but it is not definitive. The fact that he lifts his head and looks at you when you enter shows that he is aware of his surroundings. However, his withdrawal towards his mother indicates that he may be shy or uncomfortable with new people.