My son is only 6 months old and has already developed a personallity. I won't say it is negative but he gets very angry and frustrated and it is hard to know what it is he wants. I know his usual signs when he is sleepy, hungry, or sick, but when we are holding him he will sometimes fight us and grunt, and then grunt and fuss if we put him down. Is this the result of too much attention or are we completely misunderstanding him?

He's a baby... they can't communicate what they want or need... they act out.

You have to consider diaper, food, bottle, gas in tummy... many things could make him this way at any given time.

My brother was born having a temper tantrum (and continued to have them for years). Your baby may just have a less cooperative mindset, but I would first explore his physical situation. Has his pediatrician checked him out thoroughly? Unfortunately, babies, like our pets, can't talk and tell us that something hurts or doesn't feel right. His only way to tell you that is to cry and fuss and grunt.

I would take him to the pediatrician - he might have colic, lactose intolerance or ear infections - babies that young don't "act out". They are very simple beings - if they are rested, well and comfortable, they are happy. When they aren't happy, something is wrong.