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== The Hand Throughout The Animal Kingdom ==

== The Hand Throughout The Animal Kingdom ==

Structures in the human hand are remarkably similar among [[mammals]], birds and reptiles, including in some fossils. Most [[mammals]] have equivalent bones, even [[whales]] and [[bats]], although some take a significantly different shape, such as in a horse's [[hoof]].<ref>http://universe-review.ca/I10-82-limbs.jpg</ref> The opposable [[thumb]] makes it possible to grasp objects and manipulate tools. Other than humans, the only creatures with opposable thumbs are other primates, such as [[chimpanzees]], although their hands do not have the same dexterity as human hands.<ref>[http://www.britannica.com/EBchecked/topic/476264/primate#ref=ref876259 Primate] (Encyclopaedia Britannica)</ref>

Structures in the human hand are remarkably similar among [[mammals]], birds and reptiles, including in some fossils. Most [[mammals]] have equivalent bones, even [[whales]] and [[bats]], although some take a significantly different shape, such as in a horse's [[hoof]].<ref>http://universe-review.ca/I10-82-limbs.jpg</ref> The opposable [[thumb]] makes it possible to grasp objects and manipulate tools. Other than humans, the only creatures with opposable thumbs are other primates, such as [[chimpanzees]], although their hands do not have the same dexterity as human hands.<ref>[https://www.britannica.com/EBchecked/topic/476264/primate#ref=ref876259 Primate] (Encyclopaedia Britannica)</ref>

==References==

==References==