Furthermore, odds are that when you do see a chameleon change its color, it’s probably trying to broadcast its mood rather than evade predators. Nevertheless, the animal kingdom is filled with amazing color-changers, several of which dramatically outdo the chameleon clan in the skill of rapid-fire camouflage.
A person cannot taste food unless it is mixed with saliva. For example, if a strong-tasting substance like salt is placed on a dry tongue, the taste buds will not be able to taste it. As soon as a drop of saliva is added and the salt is dissolved, however, a definite taste sensation results. This is true for all foods.