● "DOG BREEDING: If you mixed a Greyhound with a Great Dane would the hybrid be faster?"
🐕1: There is no HYBRID in the question. Both animals are the SAME species, so it is just a cross.
🐕2: Faster than WHAT? Probably most of them would be faster than a Great Dane but slower than a Greyhound. But MUCH depends on which parent certain alleles of particular genes came from.
● "If you look at human runners... the fastest sprinters all tend to be quite tall, and this makes sense because the cover more distance per strike due to their long leg length. The fastest man on the planet Usian Bolt stands around 6ft 5in.
"strike" doesn't come into it. I guess you meant "stride" or "step". And I don't like "about". His height is officially 1.97metres, which is 6 ft 4¾ inches.
Height is useful by allowing a longer stride - which can be very useful for distance runners.
But for a SPRINTER the most important aspect is whether the muscles all along the pelvis-to-toes are (1) bulky or lean, and (2) whether they are "fast-twitch" or "slow-twitch".
For acceleration, bulky and fast-twitch are required. For endurance, lean and slow-twitch are required. To me, a 1 mile race was equivalent to a sprint - it was as fast as I could get my legs & body moving! Usain (notice his CORRECT spelling) Bolt would probably be breaking the tape at the end of the 100 metres before I could reach halfway, were I still back in my teens & 20s.
If you want to follow up on those terms, https://www.khanacademy.org/science/heal...
is the first in a rather slow series.
If you study photos of Usain you will notice very prominent muscles on his shoulders & upper-arms, and yet his calves are almost weak-looking and his thighs only ordinary-looking.
● "Dog breeds that run fast, tend to also have longer legs than other breeds. For example, you're unlikely to ever see a Dachshund outrun a German Shepard!!!
🤢#1: There is no such thing as a "German Shepard" - my breed was developed to HERD sheep, not to "ARD" them. Its true breed name is in German, but translates as German Shepherd Dog.
🤢#2: You also overlook that the legs of Dachshunds - and of Corgis and a few other breeds - are disproportionately short. That is because they are achondroplastic dwarfs. Achondroplasia is usually a SEVERE disorder but, provided there is no pain: for Dachshunds it allows them to creep through a low tunnel in a sett yet have a "huge" mouth to attack the badger. For Corgis it allegedly allows them to duck under the kicking hoof of the cow it is driving.
● "I wonder though... if you were to breed a Greyhound with a Great Dane, the hybrid would likely be taller and have longer legs, and might be slim enough to be a great runner, that MIGHT be faster than a pre-blood Greyhound?! ANY THOUGHTS???"
Yep - you need to learn anatomy AND genetics AND Newton's Laws of Motion & Energy: https://www.grc.nasa.gov/www/k-12/airpla...
No way would that CROSS-BREED be taller than a Great Dane or an Irish Wolfhound. No way would it be faster and better at accelerating than a Greyhound. It would be useless at a Greyhound's 2 prime tasks: #1: Catching such as a hare racing across the ground and suddenly twisting to race off to one side. The Greyhound needs to be LIGHT-weight in order to not fall over when it attempts to turn to follow the hare's new direction. #2: Following a lure around a track - acceleration is essential to be closest to the hare as it reaches the first bend.
All the TRADITIONAL breeds have specific functions, and those functions require a particular size, weight, shape.
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😛 To discuss GSDs, join some groups such as
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The people in them KNOW about GSDs. Plus you can include actual photos in your posts.
To find other groups or breeds, type the breed-name into the top field of
then choose a couple of groups to Join - use the group's
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to your browser, so that you can easily look up all sorts of information about dogs, especially GSDs. It is an "encyclopaedia" group (to which members can ask for new sources to be added), not a discussion group.
King Les The Lofty - first pup in 1950; GSD breeder & trainer as of 1968