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