Some animals have AMAZING horns. Other animals have things that LOOK like horns, but are not. Let's explore the diversity of animals and find out which ones have horns, and which ones do not. Please subscribe to continue learning what makes life AWESOME: BioBush.tv/subscribe
True horns have a very specific defintion. The American Heritage Science Dictionary defines a horn as, "Either of the bony growths projecting from the upper part of the head of certain hoofed mammals, such as cattle, sheep, and goats. The horns of these animals are never shed, and they consist of bone covered by keratin."
That seems very oddly specific compared to the way we use horn in normal language, which is "something that looks like a horn".
By going through a series of animals that break the "rules" in different ways, we will learn how that definition was made, and gain a new appreciation for the diversity of life.
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Copyright
Photo "Pavón o Guan Cornudo" by Roberto González, via Flickr (www.flickr.com/photos/6910903.... Used under Creative Commons cc-by 2.0.
Photo "Rhinoceros Hornbill nipping a peanut" by Thomas Quine, via Flickr (www.flickr.com/photos/quinet/.... Used under Creative Commons cc-by 2.0.
Photo "Rhinoceros Hornbill" by Steve Wilson, via Flickr (www.flickr.com/photos/pokerbr.... Used under Creative Commons cc-by 2.0.
Video "コンゴウフグ Longhorn cowfish Lactoria cornuta" by Sasuke Tsujita ( • コンゴウフグ Longhorn cowfis... ). Used under Creative Commons cc-by 3.0.
Video "Horned Screamers Loud" by Chingana ( • Horned Screamers Loud ). Used under Creative Commons cc-by 3.0.
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Негізгі бет What IS a Horn? - Animals That Don't Really Have Horns
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