|"Similarity to Jabba the Hutt" is one such reason.|
Because they live in cold weather, that's why. Really cold weather. They don't burrow like a cowardto escape the cold, and being amphibians, they're rather fond of water (which I hear tell is pretty bad for you when you are both drenched in it and experiencing below-freezing temperatures).
These clever little fellas have found a way around suffering hypothermia like mere humans. Their bodies fortify their tissue with urea and glucose and then they...pretty much just fall asleep. And freeze. Solid.
|Just part of the scenery|
|You know, like roughly half of science fiction?|