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