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I'm Sarah! I am seventeen and I live in Rhode Island. I love adventure and have a tendency to get lost. I'm anxious to get out into the world and discover everything it has to offer.
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jeffstockwell:

weekend getaway in Yosemite 
jeffstockwell:

weekend getaway in Yosemite 
jeffstockwell:

weekend getaway in Yosemite 
jeffstockwell:

weekend getaway in Yosemite 
jeffstockwell:

weekend getaway in Yosemite 
jeffstockwell:

weekend getaway in Yosemite 
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source | source | sourceBlack wolves do not occur naturally. A 2008 study at Stanford University found that the mutation responsible for black fur occurs only in dogs, so black wolves are the result of gray wolves breeding back with domestic canines. The mutation is a dominant trait, like dark hair in humans, and is passed down to the majority of offspring. It is not entirely clear what benefit black fur has for the animals; they do not seem to be more successful hunters, but do show a marked improvement in immunity to certain infections.

source | source | sourceBlack wolves do not occur naturally. A 2008 study at Stanford University found that the mutation responsible for black fur occurs only in dogs, so black wolves are the result of gray wolves breeding back with domestic canines. The mutation is a dominant trait, like dark hair in humans, and is passed down to the majority of offspring. It is not entirely clear what benefit black fur has for the animals; they do not seem to be more successful hunters, but do show a marked improvement in immunity to certain infections.
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