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