Anaconda!
This is a green female anaconda of the Amazon in Colombia. The females can grow to 10 meters and are very heavy weighing 200-250 kilos. They are a boa never far from water. The males are much smaller. They are extremely powerful. A large anaconda can easily constrict and swallow a human. They don't survive well in captivity and refuse to eat and must be force-fed. You can find more info in google.
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