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The tongue papillae, including the taste buds, can become inflamed. A sore tongue is not always a sign of something more serious. The tongue should be included in good dental health habits. Over time, smoking can make the tongue more sensitive to heat and cold.
The sensation of flavour is a combination of taste and smell. When there is little left on the plate my cat will smell the plate for particles of food that remains; her eyesight being almost redundant at this stage. A cat's tongue is also sensitive to the texture of the food (called mouthfeel). And as is the case for humans, the tongue is sensitive to temperature as well. Finally it is astonishing to see how effective a cat can lap up liquid with her or his tongue.