I: Does Ctenosaura similis use color vision to differentiate fruits based on ripeness?
II: When equal “I’m yummy” olfactory cues are present, does C. similis differentiate between ripe and non-ripe colors?
III: When color cues contradict olfactory cues, does color preference prevail?
(I) In the first phase, ctenosaurs strongly preferred red, yellow, and orange over green, but showed no preference for light green over dark green. None of our seventeen brown vs. green fruit model setups received bites. From this we concluded that lizards do, indeed, use color vision to forage selectively on ripe fruits.