ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel

Hypotrichosis in Animals

Updated on November 14, 2016

Hypotrichosis is a lack or paucity of hair (a.k.a. being bald) . It can be causes by toxins, parasites and other environmental causes. The cases shown in this hub, however, are mainly congenital--meaning they are the result of a genetic defect.

This hub is specifically about hairless individuals from normally-coated breeds, not breeds deliberately selected to be hairless such as the Sphinx cat or nude mouse.


Cats with fine or curly hair such as the Cornish Rex can be prone to baldness. But hairless kitten are occasionally reported from any breed or mixed-breed cat. In the Burmese it may relate to abnormalities in the thymus.

A 1936 report detailed a "cat-dog" called Nonesuch. This hairless kitten had three haired litter mates, two of which were born with missing or partial tails.

Seasonal alopecia in a Boxer
Seasonal alopecia in a Boxer | Source


Various dog breed suffer from a form of alopecia that causes variable degrees of hair loss. This is considered a desirable trait in hairless breeds and a disorder in the other breeds where it occurs such as Boxers, Bulldog or Airedale.

Alopecia is also found in dogs wit blue or fawn coats. These coat colors are produced by black or brown genes and another gene called a dilution factor that produces a paler shade.


There are six known mutation that lead to hairlessness in cattle and examples are shown here. Hair loss can also occur secondary to disorders such as sweating sickness (shown below).


A few almost completely hairless horses have been documented, and some become minor celebrities. Such as Blue Bell who was featured on postcards in the Victorian era.

Blue Bell (1871)
Blue Bell (1871)


Hypotrichosis is particularly rare in sheep but has been reported in the Polled Dorset. It can also occur as a complication of sarcoptic mange (Trioli et al, 2013).


Various forms of hypothrichosis also occur in humans including alopica.

Alopecia | Source


  • Tsioli, V., R. Farmaki, A. Papastefanou, A. D. Galatos, M. Marinou, D. Tontis, V. S. Mavrogianni, D. Doukas, M. N. Saridomichelakis, and G. C. Fthenakis. "A case of bilateral auricular haematoma in a ewe-lamb with sarcoptic mange." Small Ruminant Research 110, no. 2 (2013): 145-149.


    0 of 8192 characters used
    Post Comment

    No comments yet.


    This website uses cookies

    As a user in the EEA, your approval is needed on a few things. To provide a better website experience, uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

    For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at:

    Show Details
    HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
    LoginThis is necessary to sign in to the HubPages Service.
    Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
    AkismetThis is used to detect comment spam. (Privacy Policy)
    HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
    HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
    Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
    CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
    Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the or domains, for performance and efficiency reasons. (Privacy Policy)
    Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
    Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
    Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
    Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
    Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
    VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
    PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
    Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
    MavenThis supports the Maven widget and search functionality. (Privacy Policy)
    Google AdSenseThis is an ad network. (Privacy Policy)
    Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
    Index ExchangeThis is an ad network. (Privacy Policy)
    SovrnThis is an ad network. (Privacy Policy)
    Facebook AdsThis is an ad network. (Privacy Policy)
    Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
    AppNexusThis is an ad network. (Privacy Policy)
    OpenxThis is an ad network. (Privacy Policy)
    Rubicon ProjectThis is an ad network. (Privacy Policy)
    TripleLiftThis is an ad network. (Privacy Policy)
    Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
    Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
    Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
    Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
    ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
    Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)