Quick Answer. Lizards are distributed throughout the world, and as the San Diego Zoo notes, most of them live on the ground. Other common lizard dwelling places are underground burrows (especially in deserts), under rocks, marshy bogs and in trees.
Estrogen also can raise libido in men if the man also has healthy testosterone levels. Women are more prone to pain likely because they tend to have lower and more volatile serotonin levels.
How much of each should men have? Normal levels of testosterone and estrogen vary from man to man: average testosterone falls between 260 and 1,000 nanograms for every deciliter of blood. The average estrogen range for men is 10 to 40 picograms for every milliliter of blood.