Rat Island Evolution
By ejk, Updated
The evolution of rats as they adapt to survive life on an island.
One day, rats drifted away from their home on pieces of wood after a flood. They soon began floating towards a huge mountainous island.
Whoa! Where are we going? I hope there is food there.
The rats settled on the island but were almost driven to extinction by the local raptors, however, they adapted to have a green coat of fur and their numbers began to rise.
I don't think he can see me.
Later, these rats suffered a new problem. As they migrated to higher parts of the island they began to find less and less food. As the rats began desperately looking for food, rats with strong claws and teeth began to climb trees and eat their nuts and fruits.
I just climbed the tree and opened fruits and nuts with my claws and teeth.
How are you so fat, I'm starving?
The rats moved up even further and found bushes that were well suited as homes where they could hide while they slept.
The bushes may have been a nice habitat, but they had little food. The rats began starving again until they found a lush jungle even further up the mountain. The only problem was they couldn't live in the jungle.
Look at all of these trees full of fruit!
I'm full, but I'd feel better if we had places to hide here.
It was soon discovered that the rats that had more fat could go from the bushes they lived in to the jungle where they found food without dying. The population of rats soon flourished on the island.
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