Why do we yawn?
- Curious questions, Human body, Life Science
- October 17, 2014

Out of all the mammals on earth, there are only two groups that don’t grow any teeth: pangolins and anteaters. Because they don’t have any teeth, they have no way to chew their food. Fortunately, both groups of animals don’t need to chew. Instead, they have long sticky tongues for capturing ants and other insects!
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