>>12101144Bigger volume = less surface area to volume ratio
Yes they have higher surface but at the same time, their internal organs are capable of storing and insulating more heat
Kind of like a potato vs a french fry.
The fry cools down fast because it is small
The potato surface cools fast but the inside is guaranteed to be hot
Yes, bigger organisms also need more energy but smaller organism have a massive metabolism which makes them eat more of their own weight than any animal
Heartbeat of a mice is 10x that of a human at rest.
Some animals do get smaller in cold regions but they are known as the exceptions to the rule.
Polar Bears are bigger than black bears,
artic wolves are bigger than desert wolves,
Siberian tigers are bigger than Bengal tigers
The Bergmann's rule apply mostly to predators
