There are thought to more than 5,400 types of mammals living on Earth. They come in all shapes and sizes - from tiny mice come towering giraffes, and also scale-covered pangolins come 100-tonne whales.
You are watching: How many bones in giraffe neck
But in spite of their differences now, every mammals stemmed indigenous one usual ancestor, v the more quickly mammal fossils currently thought to day to between 220 and 165 million year ago.
Watch as senior curator the mammals Louise Tomsett explains the how amazing similarity between mice and also giraffes.
It"s all in the neck
Mice and also giraffes live drastically various lives – not to cite that giraffes tower end mice by over 5 meters.
A giraffe"s neck is particularly long, comprising a huge part of its height. This allows the animal to resmashville247.neth the pipeline of high trees. Yet an elongated neck is likewise integral to the courtship plot of "necking".
Necking involves males duelling through swinging their heads like damaging rams right into esmashville247.neth other"s ribs and legs. Those with longer necks commonly stand to an advantage in these battles.
Despite that is elongated form, the neck that a giraffe is comprised of just seven big bones well-known as cervical vertebrae.
By comparison, the human body of the usual house mouse (Mus musculus) is only approximately 10 centimetres long, its tail contributing much more to the as whole length.
Mice, such as this yellow-necked mouse, have the same variety of bones in their necks as giraffes
However, regardless of outward appearances, the small rodent bears one striking similarity come Earth"s tallest living terrestrial creature on a bones level.
Mice also have 7 cervical vertebrae in their necks, despite extremely small compared to those the a giraffe.
Mice and giraffes competent two really different evolutionary journeys from their common ancestor to finish up as the vastly different pets they spsmashville247.nete today.
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With few exceptions, such together manatees and sloths, almost all mammals - including humans - possess 7 neck bones.
What top top Earth?Just how weird deserve to the natural civilization be?
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