Their skin may look similarly slippery to that of a dolphin, but a key difference between them is that frogs lack both hair and hair follicles. <\/p>\n\n\n\n
Because of how porous a frog\u2019s skin must be to help it breathe, the thick keratin necessary to make hair would only suffocate them. However, there is a frog whose common name is almost an oxymoron: the Hairy Frog.<\/p>\n\n\n\n
Hairless Hairy Frogs<\/h2>\n\n\n\n
Trichobatrachus robustus<\/em>\u200b, commonly known as the Hairy Frog, makes its home in the wet detritus of west-central Africa\u2019s forests and rainforests. They are largely terrestrial but return to freshwater streams and creeks to breed and lay their eggs. <\/p>\n\n\n\n For frogs, their environment and behavior are pretty typical. It\u2019s only when you look at a hairy frog closely that things start to get weird.<\/p>\n\n\n\n Hairy frogs, along with the family\u00a0\u200bAstylosternus<\/em>\u200b\u00a0of night frogs, are also nicknamed \u201cWolverine frogs\u201d or \u201chorror frogs\u201d because of their ability to break claws out of their toes to defend themselves. And I say\u00a0\u200bbreak<\/em>\u200b\u00a0literally. <\/p>\n\n\n\n Along with a small bone that holds the claw in, the claws actually break the frog\u2019s skin on the way out, much like X-men\u2019s Wolverine. That\u2019s just how these frogs got their nickname, though. The \u201chairy\u201d part of hairy frog comes from yet another weird feature.<\/p>\n\n\n\n Male hairy frogs are larger than the females, though they share the murky brown and green coloration. The males, however, also have what looks like hair on the sides of their abdomen and their legs. But we already know that frogs can\u2019t grow hair without blocking up their sensitive skin. So how does this particular frog keep breathing?<\/p>\n\n\n\n With its \u201chairs\u201d of course! The hairlike growths that give these male hairy frogs a nice pair of cowboy pants are actually a skin structure called dermal papillae<\/strong>.<\/p>\n\n\n\n Humans have dermal papillae too, and they help to keep our hair and skin healthy. They feed nutrients to our epidermis and hair follicles, as well as form ridges on our skin that we call fingerprints.<\/p>\n\n\n\n For male hairy frogs, dermal papillae serve a similar purpose, but instead of nutrient distribution, the hairlike ridges aid in nutrient absorption. These slimy extensions of the frog\u2019s skin are a bit thicker than hair, with room for some important anatomy. <\/p>\n\n\n\n Within the dermal papillae are arteries, which help the frog absorb oxygen more effectively, especially since, with so many \u201chairs,\u201d the surface area for the frog to breathe in through is huge.<\/p>\n\n\n\n The use of dermal papillae to increase male hairy frogs\u2019 breathing capacity is similar to how Axolotls have feather-like gills on their heads to help them breathe. The more spread out they can get their filters, the more air they can catch and breathe.<\/p>\n\n\n\n So why do only the males have this hairy feature? Scientists believe that it\u2019s because the male frogs stay in the water with their eggs longer than females do. They also believe that it\u2019s because male \u200bT. robustus<\/em>\u200b are too robust-us to have large enough lungs to support them in the water.<\/p>\n\n\n\n Now, with everything we know about dermal papillae, let\u2019s consider the old adage \u201cAs fine as a frog\u2019s hair.\u201d According to Amy Reeves of the Goldendale Sentinel, \u201c\u200bThis is an American simile and dates back to the mid-nineteenth century and is used to relate that you are feeling excellent.\u201d <\/p>\n\n\n\n She also states that \u201cFrogs do not really have hair and the ironic reference in this saying is intended to accentuate the effect of being extremely fine with how you are feeling.\u201d<\/p>\n\n\n\n Like \u201cblind as a bat\u201d or \u201cstubborn as a mule,\u201d \u201cas fine as frog\u2019s hair\u201d isn\u2019t based on facts. It\u2019s simply a fun thing to say and think about when commenting on how you feel. Though if you did consider the hairy frog\u2019s dermal papillae \u201chair,\u201d then if someone tells you they\u2019re \u201cas fine as frog\u2019s hair,\u201d they wouldn\u2019t be that fine at all!<\/p>\n","protected":false},"excerpt":{"rendered":" As mammals, having hair, taking care of hair, and cutting hair are completely normal for us. Many of the animals we surround ourselves with as…<\/p>\n","protected":false},"author":2,"featured_media":1872,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"acf":[],"yoast_head":"\n![\"Hairy](\"https:\/\/www.frogpets.com\/wp-content\/uploads\/2018\/04\/hairy-frog.jpg\")
Dermal Papi-what?<\/h2>\n\n\n\n
\u2018As Fine As Frog\u2019s Hair\u2019<\/h2>\n\n\n\n