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  4. Why are we (humans) not as varied in shape and size like dogs ?
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Why are we (humans) not as varied in shape and size like dogs ?

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Offline neilep (OP)

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Why are we (humans) not as varied in shape and size like dogs ?
« on: 11/04/2007 03:28:31 »
This is a chiwawa:



This is a Great Dane and another Chiwawa:



This is an Old English Sheep dog:




This is a bunch of Peeps:



Notice how all the Peeps look very similar in stature and build etc ?


Why are there more varieties on such a grand scale of canines  (and other animals like bears, primates)....than there are humans ?...or perhaps my question should be...why are there less varieties on a grand scale of humans than there are other types of animal ?
« Last Edit: 11/04/2007 03:30:48 by neilep »
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Offline JimBob

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Why are we (humans) not as varied in shape and size like dogs ?
« Reply #1 on: 11/04/2007 03:54:51 »
I guess Samuel (Peeps, that is - I know, it's Peyps) like the same type of women and only, how do I say it, propagated, his line with very similar looking women.
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Offline Karen W.

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Why are we (humans) not as varied in shape and size like dogs ?
« Reply #2 on: 11/04/2007 04:11:48 »
I don't know Is that a shot from one of your wedding fayres?
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another_someone

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Why are we (humans) not as varied in shape and size like dogs ?
« Reply #3 on: 11/04/2007 04:21:59 »
One explanation I have heard is because dogs have more chromosomes to play with, so can have more combinations of genes to mix up.

But, at least as much of an issue is that dog breeds are totally artificial - we deliberately inbreed dogs with certain characteristics to develop the different breeds.  We do not in general implement the same deliberate breeding programs to create the same variety of human breeds.

Dogs, if left to their own natural breeding habits will revert to all being something like wolves or dingos.
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Offline BillJx

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Why are we (humans) not as varied in shape and size like dogs ?
« Reply #4 on: 11/04/2007 05:23:57 »
Quote from: another_someone on 11/04/2007 04:21:59




 - we deliberately inbreed dogs with certain characteristics to develop the different breeds.  We do not in general implement the same deliberate breeding programs to create the same variety of human breeds.

Dogs, if left to their own natural breeding habits will revert to all being something like wolves or dingos.

To start with an intelligent, competent animal and deliberately breed it in such a way as to render it unfit to be anything but a living toy, I think is a crime of arrogance.
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another_someone

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Why are we (humans) not as varied in shape and size like dogs ?
« Reply #5 on: 11/04/2007 07:08:48 »
Quote from: BillJx on 11/04/2007 05:23:57
To start with an intelligent, competent animal and deliberately breed it in such a way as to render it unfit to be anything but a living toy, I think is a crime of arrogance.

It depends on the dog.  A rotweiler or a sheepdog is bred as a working dog, and certainly not merely a toy (maybe a slave, but not a toy).

But then, selective breeding is not only something we do for dogs - we do the same for cattle, sheep, and numerous other species of animals (even the European honey bee has been selectively bred).
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Offline DoctorBeaver

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Why are we (humans) not as varied in shape and size like dogs ?
« Reply #6 on: 11/04/2007 08:46:03 »
Quote from: BillJx on 11/04/2007 05:23:57
Quote from: another_someone on 11/04/2007 04:21:59
- we deliberately inbreed dogs with certain characteristics to develop the different breeds.  We do not in general implement the same deliberate breeding programs to create the same variety of human breeds.

Dogs, if left to their own natural breeding habits will revert to all being something like wolves or dingos.

To start with an intelligent, competent animal and deliberately breed it in such a way as to render it unfit to be anything but a living toy, I think is a crime of arrogance.

Arrogance or not; so long as the animal is happy & well looked after, that's all that matters.

Seeing a border collie shepherding or a Rottweiller rounding up cattle is a joy to behold. OK, so they were deliberately bred; but you will never see happier animals than those 2 breeds when they're working.
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Offline Bored chemist

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Why are we (humans) not as varied in shape and size like dogs ?
« Reply #7 on: 11/04/2007 11:18:33 »
OK, ignoring the problem of defining "happy" for non human species, there are some breeds of dogs that have been taken to such extremes that they are prone to various diseases. That's criminal if you ask me.
BTW, the cattle are working too; how happy are they to be chased by a rottweiler?
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Offline daveshorts

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Why are we (humans) not as varied in shape and size like dogs ?
« Reply #8 on: 11/04/2007 12:58:09 »
Basically dogs have been very strongly bred for their physical characteristics. If you just let very tall people breed with other very tall people, you would quite quickly get a race of very tall people.

Whether you could get the variation of size you can with dogs, I am not sure, because humans are genetically very uniform - I think there is more genetic variation in mountain gorrillas than humans - so there is a lot less diversity to work with than in a wolf, so you probably couldn't push humans as far with selective breeding - essentially we are a very highly bread hominid breed that has been selected for a large brain.
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Why are we (humans) not as varied in shape and size like dogs ?
« Reply #9 on: 11/04/2007 13:00:25 »
Quote from: Bored chemist on 11/04/2007 11:18:33
OK, ignoring the problem of defining "happy" for non human species, there are some breeds of dogs that have been taken to such extremes that they are prone to various diseases. That's criminal if you ask me.

I would suggest that defining 'happy' for non-human species is no more difficult that defining 'happy' for a 4 month old child, and it is scarcely easier to define 'happy' even for an adult.

One thing we can at least say is that when an animal is clearly sufferring, we tend to put it out of its misery - something we refuse to do for humans.

As for whether it is right to unnecessarily inbreed dogs that are particularly prone to some illnesses - in general, (although I would not use the word criminal - since that is a word with a very precise meaning) I would agree that I am uncomfortable with the idea, but there are many analogous (although not identical) questions that can be applied to human experience too.

Quote from: Bored chemist on 11/04/2007 11:18:33
BTW, the cattle are working too; how happy are they to be chased by a rottweiler?

Probably the same way that a child feels when it is angrily told to go to school (bear in mind that the dogs do not physically harm the animals they are herding, any more than a decent parent physically harms its child).
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Why are we (humans) not as varied in shape and size like dogs ?
« Reply #10 on: 11/04/2007 13:27:02 »
Quote from: JimBob on 11/04/2007 03:54:51
I guess Samuel (Peeps, that is - I know, it's Peyps) like the same type of women and only, how do I say it, propagated, his line with very similar looking women.


How he managed to woo women, write a diary and single handedly extinguish the fire of London is worthy of BIG respect !!
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Why are we (humans) not as varied in shape and size like dogs ?
« Reply #11 on: 11/04/2007 13:29:31 »
Quote from: Karen W. on 11/04/2007 04:11:48
I don't know Is that a shot from one of your wedding fayres?

yes it is !!..can't ewe see all the brides and wedding cakes ?...LOL...no ..it's just some piccy of a crowd I found !!

wedding fayres are a little more discrete with all fluffy wedding stufff all over the place !!
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Offline neilep (OP)

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Why are we (humans) not as varied in shape and size like dogs ?
« Reply #12 on: 11/04/2007 13:36:17 »
Quote from: another_someone on 11/04/2007 04:21:59
One explanation I have heard is because dogs have more chromosomes to play with, so can have more combinations of genes to mix up.

But, at least as much of an issue is that dog breeds are totally artificial - we deliberately inbreed dogs with certain characteristics to develop the different breeds.  We do not in general implement the same deliberate breeding programs to create the same variety of human breeds.

Dogs, if left to their own natural breeding habits will revert to all being something like wolves or dingos.

Thank Ewe for this George.

Any ideas what the ratio is to pure breeds to ' artificial' ones are ?

I assume there must be a ' foundation template' of a few thoroughbreds ?

Could the ratio be as high as i think it might ?.(Wild guestimate 80:20)........in that I expect there to be far more ' manufactured ' breeds than thoroughbreds !!......but what about other types of multi-variety animal ?
« Last Edit: 11/04/2007 13:43:29 by neilep »
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Offline neilep (OP)

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Why are we (humans) not as varied in shape and size like dogs ?
« Reply #13 on: 11/04/2007 13:42:14 »
Quote from: Bored chemist on 11/04/2007 11:18:33
OK, ignoring the problem of defining "happy" for non human species, there are some breeds of dogs that have been taken to such extremes that they are prone to various diseases. That's criminal if you ask me.
BTW, the cattle are working too; how happy are they to be chased by a rottweiler?

There is no doubt that there are types of dog that are  bred for the cosmetic fancy of their owners.....and often to the detriment of the dog itself. I can not remember the breeds but there are some that can barely walk as their legs are so short, they can barely breathe...........they can barely do anything except be an ornate adoration.
« Last Edit: 11/04/2007 13:44:05 by neilep »
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paul.fr

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Why are we (humans) not as varied in shape and size like dogs ?
« Reply #14 on: 11/04/2007 13:59:00 »
pink poodles...what are they all about?
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another_someone

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Why are we (humans) not as varied in shape and size like dogs ?
« Reply #15 on: 11/04/2007 14:17:07 »
Quote from: neilep on 11/04/2007 13:36:17
Any ideas what the ratio is to pure breeds to ' artificial' ones are ?

I assume there must be a ' foundation template' of a few thoroughbreds ?

Could the ratio be as high as i think it might ?.(Wild guestimate 80:20)........in that I expect there to be far more ' manufactured ' breeds than thoroughbreds !!......but what about other types of multi-variety animal ?

As far as I am aware, there is only one natural breed of dog, and that is the wolf, and everything else is an artificial breed.

Clearly, there is some variety amongst wolves, but none of that variety directly correlates to a modern breed of dog.

Trying to find a natural breed dog is like trying to find a natural breed of cow - no domestic animal is ultimately natural.
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Offline neilep (OP)

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Why are we (humans) not as varied in shape and size like dogs ?
« Reply #16 on: 11/04/2007 14:26:49 »
Quote from: another_someone on 11/04/2007 14:17:07
Quote from: neilep on 11/04/2007 13:36:17
Any ideas what the ratio is to pure breeds to ' artificial' ones are ?

I assume there must be a ' foundation template' of a few thoroughbreds ?

Could the ratio be as high as i think it might ?.(Wild guestimate 80:20)........in that I expect there to be far more ' manufactured ' breeds than thoroughbreds !!......but what about other types of multi-variety animal ?

As far as I am aware, there is only one natural breed of dog, and that is the wolf, and everything else is an artificial breed.

Clearly, there is some variety amongst wolves, but none of that variety directly correlates to a modern breed of dog.

Trying to find a natural breed dog is like trying to find a natural breed of cow - no domestic animal is ultimately natural.

Have you met my wife ?
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Offline elegantlywasted

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Why are we (humans) not as varied in shape and size like dogs ?
« Reply #17 on: 11/04/2007 15:26:35 »
English Bulldogs cannot breed naturally anymore. Their bodies do not allow for the actual act to take place, and because their heads have been designed to be so large they can only be delivered by C-Section.
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Offline Seany

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Why are we (humans) not as varied in shape and size like dogs ?
« Reply #18 on: 11/04/2007 16:01:42 »
Hmm, not so long ago, there was an article on the newspaper on this. Darn, I forgot to read it though  [:P]
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Offline Karen W.

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Why are we (humans) not as varied in shape and size like dogs ?
« Reply #19 on: 11/04/2007 16:13:13 »
Quote from: neilep on 11/04/2007 13:29:31
Quote from: Karen W. on 11/04/2007 04:11:48
I don't know Is that a shot from one of your wedding fayres?

yes it is !!..can't ewe see all the brides and wedding cakes ?...LOL...no ..it's just some piccy of a crowd I found !!

wedding fayres are a little more discrete with all fluffy wedding stufff all over the place !!

Thats alot of people wherever it is!
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