In the human saliva, there is an enzyme called ptyalin which converts part of the starch in the food to sugar. Rice will taste sweeter if chewed and eaten slowly.
                 Pond tortoises have no saliva in their mouth. Poor things! They have to eat their food inside the water. Dry food sticks in their mouth.
                  Snake venom is nothing but saliva, though it is a modified variety. Thank heavens, we do not have that variety of saliva!

A Pond Tortoise
A Venomous Snake


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