Chuckwallas can modulate their color to better absorb light/heat to regulate their temperature. As diurnal lizards, they are considered one of the"hottest" lizards because they will bask until their bodies reach 100 to 105 degrees. Chuckwallas are can break off and re-grow a tail, if necessary, to evade predation. Chuckwallas' teeth grow in grooves inside their mouth. If they lose one, they will re grow one to replace it.