Siberian sled dogs are the fittest animals in the world

https://www.pinterest.com/m_armstrong13/puppies/

Man – 2.8 litres of oxygen per minute

A human has a V02 max of 40 millileters of oxygen per kilo, per minute.

That means if you weigh 70 kg, every minute you take in 70*40= 2800ml

-vs-

Dog – 6 litres of oxygen per minute

Siberian dogs can have a VO2 max of 240 mL/(kg·min).

So if a  male husky weighs about 25 kg they are sucking in 6 litres of oxygen per minute

 

Sources:

https://www.reference.com/pets-animals/much-husky-weigh-c5c1bc2728d42fd9#

https://en.wikipedia.org/wiki/VO2_max

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