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Carotenosis is a benign and reversible medical condition where an excess of dietary carotenoids results in orange discoloration of the outermost skin layer. The discoloration is most easily observed in light-skinned people and may be mistaken for jaundice. [ 1][ 2]: 540 [ 3]: 681 Carotenoids are lipid-soluble compounds that include alpha- and ...
The post ‘Puppy-Dog Eyes’ Didn’t Evolve Just for Humans, Study Shows appeared first on DogTime. Pet parents would agree that it is hard to resist puppy-dog eyes. A recent study proved that ...
Color blindness or color vision deficiency ( CVD) is the decreased ability to see color or differences in color. [ 2] The severity of color blindness ranges from mostly unnoticeable to full absence of color perception. Color blindness is usually an inherited problem or variation in the functionality of one or more of the three classes of cone ...
Helen Adams Keller (June 27, 1880 – June 1, 1968) was an American author, disability rights advocate, political activist and lecturer. Born in West Tuscumbia, Alabama, she lost her sight and her hearing after a bout of illness when she was 19 months old. She then communicated primarily using home signs until the age of seven, when she met her ...
Equine vision. The eye of a horse. The equine eye is one of the largest of any land mammal. [ 1] Its visual abilities are directly related to the animal's behavior; for example, it is active during both day and night, and it is a prey animal. Both the strengths and weaknesses of the horse's visual abilities should be taken into consideration ...
The worms are transmitted by infected flies, which pass them to animals and potentially humans by landing near their eyes and feeding on their tears, according to the CDC. In serious cases, they ...
Kiki and Koko are adorable Beagles and they're no exception to this - when dinnertime starts to get close, they start to prepare for it! Their paw-rents shared a video on Tuesday, July 23rd of ...
The evolution of color vision in primates is highly unusual compared to most eutherian mammals. A remote vertebrate ancestor of primates possessed tetrachromacy, [ 1] but nocturnal, warm-blooded, mammalian ancestors lost two of four cones in the retina at the time of dinosaurs. Most teleost fish, reptiles and birds are therefore tetrachromatic ...