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