A mixed-breed dog (also called a mutt or mongrel) is a dog that is a
mixture of two or more breeds. Mixed-breed dogs vary in size, shape,
and color, making them hard to classify physically, but some colors
are more common than others. With each generation of mixing, the
offspring move closer to the genetic norm. Dogs that are descended
from many generations of mixes are typically light brown or black and
weigh about 18 kg (40 lbs). The theory of hybrid vigor suggests that
dogs of mixed ancestry will be healthier than their purebred
counterparts. In some cases this might be true, because inbreeding
among purebreds has made some breeds prone to various genetic health
problems. Historically, dog shows and dog sports excluded mixed-breed
dogs from competition. While this tradition is changing, some sports
still remain open only to one breed of dog, such as greyhound racing.
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Today's selected anniversaries:
1687 The Parthenon in Athens was partially destroyed during an
armed conflict between Venetian and Ottoman forces.
1907 New Zealand became a dominion within the British Empire.
1957 West Side Story, a musical written by Arthur Laurents,
Leonard Bernstein and Stephen Sondheim, and produced and
directed by Jerome Robbins, made its debut on Broadway.
1983 Lieutenant Colonel Stanislav Petrov of the Soviet Union
averted a worldwide nuclear war.
Wikiquote of the day:
"Men never do evil so completely and cheerfully as when they do it
from religious conviction." ~ Blaise Pascal