They have territories
They are more aggressive
They have different colored dewlaps
All of the above
They have more testosterone and progesterone when they are babies
he gives them more testosterone or progesterone
he gives them more food
he threatens to bite them
he gives them territories with lots of females
a type of lizard behavior
a type of tree lizard
a hormone in lizards and people
a chemical that is higher in women than in men
reading a book
running away from a fight
starting a fight
sharing toys at the playground
warming themselves in the sun
changing their hormone levels
communicating with other lizards
catching insects