With young dogs the last thing you want is a conflict between what you are making him do and what his instincts are driving him to do. Which is great because this is what we use to mold him into the working dog he will become. He needs to know that they are YOUR sheep and you are allowing him to work them. Charles Darwin even wondered over this difference years ago when he wrote On the Origin of Species.
And, it turns out, he was onto something. Neural crest cells help dictate the size and shape of many animal characteristics, from their skeletal and connective tissues to their facial structure and ears. Basically, as dogs became more and more tame, the number and behavior of their neural crest cells changed. And they process that information in a different part of the brain from where they process emotional cues in speech.
To figure that out, graduate student Victoria Ratcliffe of the University of Sussex in England set up a clever experiment. She brought dogs into the lab.
At first, the command sounded normal. Dog owners and K-9 handlers ought to keep You're at a noisy, cocktail party and yet your ears can detect normally inaudible sounds. But, unlike normal hearing, each of these sounds causes your ears to react Piecing together the details of those migrations has proved difficult because the clues are scattered across the genomes of hundreds of dog Print Email Share.
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