Question

Why do yaks have large lungs

Answer 1

The yak has adapted to these conditions: It is considered to take in larger volumes of air than most other cattle, to retain a higher proportion of the oxygen breathed in and to be protected against harmful effects of solar radiation by the colour of its coat and skin.

Answer 2

as we go high from sea level oxygen is available in lesser amount thus they have large lungs to fight against scarscityof oxygen