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