Mammals shrink in size when Earth heats

Global Warming is an ever increasing phenomenon right now our world is facing due to ever increasing anthropogenic activities. So, today to spice up your knowledge, we have come up with a different topic related to Global Warming & its repercussions.

You all are aware of problems animals are facing due to Global Warming & climate change, but have you ever heard of size shrinking of animals due to global warming?

Yes, our beloved readers, you heard it right. Mammals do shrink in size when Earth heats up.

A study shows that, Global  Warming shrank certain animals in the ancient past & scientists worry it could happen again. Warm blooded animals got smaller at least twice in Earth's history when carbon dioxide levels soared & temperature spiked as part of a natural warming.

The size reduction  phenomenon of large animals into smaller one's is known as ''INSULAR DWARFISM''.

Three different species shrank noticeably about 54 million years ago when the planet suddenly heated up. One of them an early compact horse got 14% smaller, going from about 17pounds (7.7kg) to 14.6pounds (6.6kg).

Another creature that contracted was a lemur like animal that's the earliest known primate. It shrank about 4% while it may not seem like much, its noticeable because studies of animal over millions of years showed it was usually getting bigger over time.

Scientists & farmers have also long tracked animals such as cows, that shrink & give less milk during hotter stretches. These results are very significant because they provide another independent test of whether climate drives changes in body size in mammals.

In hotter climates, mammals & other warm blooded animals need to shed heat so they shrink. Smaller animals have more skin or fur per pound than bigger animals so more heat can escape, making them better adapted for warmer climate. Larger animals do better in the cold because they have less skin per pound & keep their heat.

The bigger natural warming 56 millions years ago saw temperatures rise 5.8⁰C or more probably from giant belches of methane from dead plants & animals that had accumulated on the sea floor.

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