<|im_start|>user
What are some extinct species of big cats and what do we know about them?<|im_end|>
<|im_start|>assistant
Some notable extinct big cat species include the Saber-toothed Cat (Smilodon) and the European Cave Lion (Panthera spelaea). The Saber-toothed Cat lived during the Pleistocene epoch and is known for its long, curved canine teeth, which it likely used to hunt large herbivores. It went extinct around 10,000 years ago, possibly due to climate change and loss of prey. The European Cave Lion was larger than modern lions and inhabited Europe, Asia, and North America. It went extinct around 14,000 years ago, likely due to a combination of hunting by humans and environmental changes.<|im_end|>

<|im_start|>user
What are some extinct species of big cats and what do we know about them?<|im_end|>
<|im_start|>assistant
Extinct big cats include the woolly mammoth and the woolly rhinoceros, which were large mammals that lived during the Ice Age. They are known for their thick fur and large tusks. While they are fascinating creatures, they are not big cats and therefore do not belong in a discussion about extinct species of felids.<|im_end|>

What are some extinct species of big cats and what do we know about them?