detent have been our furred fellow for G of years , but they did n’t always look the style they do today .
Many well - known breed have changed a muckle physically in the last century , thanks to mankind .
By key specific traits — such as size , coating vividness , and demeanor — and allow only those animals to mate , we ’ve createdat least 167 dissimilar " breeds,“or grouping of dogs with unique strong-arm and mental characteristics . Still , they ’re all part of the same mintage .

The Science of Dogs blog put togethera side - by - side comparisonof several popular strain from the 1915 book"Dogs of All Nations"by Walter Esplin Mason , show what they look like today .
Here are some of the hound from that listing , plus a dyad more we found ourselves .
Tanya Lewis lead to an former version of this spot .

cop terrier then
Thebull terrierwas first recognized as a breed by the American Kennel Club ( AKC ) in 1885 . In 1915 , it appears to have been a fit , good - looking dog , with a well - proportioned head and slim torso . " Dogs of All Nations " called it " the incarnation of agility , goodwill , elegance and determination , " and the " gladiator of the canine race . "
papal bull terrier now

But today , bull terriers are engender to have a football - shaped head teacher and a thick , squat body — a far cry from the skimpy and big dog of 1915 .
The AKC now states that the wienerwurst ’s face " should be oval in scheme and be filled completely up giving the impression of comprehensiveness with a open devoid of hollows or indentations , i.e. , egg shape . " According to Science of Dogs , it also developed extra teeth and a habit of chasing its butt .
English bulldog then

Few dogs have been as unnaturally shaped by breed as the English English bulldog . In the UK , the frump were used forbull - baiting — a blood sport where heel were used to bait and attempt copper — until it became illegal in 1835 . In 1915 , the English bulldog already had some of the characteristic features we see today , like saggy jowls and a squat posture .
English bulldog now
Today , stock breeder have bred the bulldog to have more pronounced facial wrinkles , and an even thick and nester body . The AKC identify the ideal dog as having a " expectant , thick - set , low - swung body , massive little - faced head , broad berm and tough branch . " deplorably , bulldogs suffer from a turn ofhealth issues , such as respiration trouble and overheating .

German sheepherder then
German shepherdshave amount to symbolize everything from loyalty and companionship to police barbarism . The AKC first recognise is as a breed in 1908 . In 1915 , " Dogs of All Nations " described it as a " average sized dog " weigh just 55 pounds , with a " deep chest , straight back and strong loins . "
German shepherd now

But today ’s German shepherds are bred to be considerably larger — 75 to 95 pounds — with a more slanting back . The AKC describes the ideal specimen as " a strong , agile , well muscle animal , alert and full of living . "
But they are also prone to wellness job , such as hip dysplasia , where the leg bones do n’t fit properly into the pelvis socket , and bloat , a condition in which the tum can expand with air and twist , which can sometimes be fatal .
Airedale terrier then

Though you ca n’t tell from this photo , " Dogs of All Nation " line the coloring of the Airedale ’s head and ears as a rich tan , as well as the leg up to the second joint and elbows . And the dog ’s coat was " hard and wiry , " but not long enough to be " ragged . "
Airedale terrier now
Today , the colour appears not to have changed much , but the fur of modern Airedales definitely depend longer and more " ragged " than it was in 1915 — though why stock breeder value that now , we ca n’t say . Airedales are considered the orotund of all terrier , and are rollick and playful .

Shetland sheepdog then
The Shetland sheepdog , or Sheltie , was n’t make out by the American Kennel Club until 1911 , just four years before the book this image is from was published . At that metre , the book cover that it weighed just 7 to 10 pound and appeared to have intermediate - length pelt .
Zetland sheepdog now

Today , the dogs have been breed to be larger , weighingat least 20 pounds , though still slight . And their fur has become unmistakably longer than in 1915 . The AKC now describe them as " minuscule , snappy , jumpy - coated , long - haired working " dog . They are alsovery intelligent , and good at herding .
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