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Originally Posted by GenuineRisk
And it's also so interesting how genes will be placed on the DNA thread- like how so many Dalmations are deaf because a gene linked to deafness is located near one that cause piebald coloring in fur.
Real Sports with Bryant Gumbel did a great 15 minute piece on dog shows, and had some good images of what we've done to some dog breeds over a century. I was unaware that shorter muzzles make it hard for dogs to cool themselves, which is why Bulldogs and Pekinese and other smooshed-in-face dogs overheat so fast.
We have a Staffordshire mix we got from a shelter, but she looks more like bulldogs from a century ago Evolution is not a straight line, for sure. Not that she'll be contributing anymore; she's spayed. 
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i have a mix breed dog, she looks like a schnauzer. have had several ask about getting one of her pups when she has a litter. sorry, she's spayed. i was studying her feet, with declaws dogs have the same number of 'fingers' we have, but they have paws instead of hands. we have a foot so we can stand upright (easier to carry things if we walk instead of being on all fours), they have more leg.
true about evolution not being a straight line, it also doesn't necessarily change things for the better, it has no moral compass or goal.