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- fun fact! the dire wolf was about 20 percent larger than today's gray wolves!
- bark woof (there are some wolf species that have gone extinct. this means that the species died out and no longer exists. for example, the dire wolf went extinct around 12,700 years ago.)
- woof bark (scientists believe the dire wolf went extinct due to an increase in competition for prey that was brought on by climate change, an example of both resource availability and environmental conditions.)
- (this is known as natural selection. the dire wolves traits weren't fit for the environment, or there was a species who had better traits, so it died out.)
- woof woof (the most common kind of wolf today is the gray wolf. they've evolved to have long legs fit for running fast for long distances.)
- bark grr (they also have large skulls and jaws fit for catching and eating large animals.)
- (these are examples of winning traits. these characteristics of the gray wolf are what makes it a winner when it comes to natural selection. meaning that it is able to survive well in its environment.)
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