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