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