Loss of Australia's 10-foot kangaroos and rhino-size wombats led to changes in landscape and wildfire outbreaks.
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Conservation efforts like captive breeding programs are helping tigers avoid extinction. Will tigers survive?
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Increases in the human population, possibly up to 10-fold, in southwestern France might have pushed the Neanderthals out of the area.
The turtles and their water-loving cousins seem to have survived because of their slow metabolisms, but why did the mammals win out in the end?
Extinction levels from habitat loss may not be as bad as predicted, as evidenced by a lack of observed extinctions.
The arm bones of the extinct Tasmanian tiger show they hunted differently than dingoes, which could mean the competition might not have been the major factor leading to their demise in Australia.