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Female emus court the males; the female's plumage darkens slightly and the small patches of bare, featherless skin just below the eyes and near the beak turn turquoise-blue. The colour of the male's plumage remains unchanged, although the bare patches of skin also turn light blue.
Glaucoma is a progressive condition the eye causes damage to the optic nerve. [7] The damage to the optic nerve is usually caused by intraocular pressure [8] of the eye being elevated. Glaucoma can be seen in dogs, and less commonly, cats. Treatment [9] can be in the form of ocular medication, like prescription eye drops.
The dark blue, teal, and gold tapetum lucidum from the eye of a cow Retina of a mongrel dog with strong tapetal reflex. The tapetum lucidum (Latin for 'bright tapestry, coverlet'; / t ə ˈ p iː t əm ˈ l uː s ɪ d əm / tə-PEE-təm LOO-sih-dəm; pl.: tapeta lucida) [1] is a layer of tissue in the eye of many vertebrates and some other animals.
Diverse eyes are known from the Burgess shale of the Middle Cambrian, and from the slightly older Emu Bay Shale. [2] Eyes vary in their visual acuity, the range of wavelengths they can detect, their sensitivity in no light, their ability to detect motion or to resolve objects, and whether they can discriminate colours.
Paraglider catches dog chasing birds on top of Great Pyramid of Giza Pups take to water to catch waves before big competition Overweight 38-pound kitty is on a health journey
Nocturnal Animals ending: What happens to Edward and Susan? Susan continues to read Edward's novel. In the story, one of the three men who abducted and murdered Laura and India has been killed in ...
But Olenik says emus are better than dogs. After his brother died of a heart attack in 2019 and his father passed away of lung cancer in 2021, Olenik didn’t know how to cope. At the same time ...
Some reptiles, such as the sand lizard of Europe, have eyespots; in the sand lizard's case, there is a row of spots along the back, and a row on each side. [12]Many species of cat, including Geoffroy's cats, jungle cats, pampas cats, and servals, have white markings, whether spots or bars, on the backs of their ears; it is possible that these signal "follow me" to the young of the species.