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"Point mutations in a distant sonic hedgehog cis-regulator generate a variable regulatory output responsible for preaxial polydactyly".
186 The close relatives of the domestic cat, the African wildcat ( Felis lybica ) and the sand cat (.
Systema naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis (in Latin).Schullerlevis,.; Mehta,.; Rudelli,.; Sturman,.115 Cats, like all mammals, need to get linoleic acid, an essential fatty acid, from their diet."Tooth Resorption and Vitamin nfo bestand maken D 3 Status in Cats Fed Premium Dry Diets".249 The usual ancient Greek word for " cat " was ailouros, meaning "thing with the waving tail 248 :57 249 but this word could also be applied to any of the "various long-tailed carnivores kept for catching mice".152 :153 Perhaps the best known element of cats' hunting behavior, which is commonly misunderstood and often appalls cat owners because it looks like torture, is that cats often appear to "play" with prey by releasing it after capture.94 For instance, cats are able to tolerate quite high temperatures: Humans generally start to feel uncomfortable when their skin temperature passes about 38 C (100 F but cats show no discomfort until their skin reaches around 52 C (126 F 61 :46 and can tolerate temperatures.68 The fifth front claw (the dewclaw ) is proximal to the other claws.

While asleep, cats experience short periods of rapid eye movement sleep often accompanied by muscle twitches, which suggests they are dreaming.
7 By contrast, feral cats are generally silent.
133 Nose-to-nose touching is also a common greeting and may be followed by social grooming, which is solicited by one of the cats raising and tilting its head.
Ragni,.; Possenti,.; Sforzi,.; Zavalloni,.; Ciani,.
112 This means that arachidonic acid is an essential fatty acid for cats as they lack the ability to create required amounts of linoleic acid."Comparative Morphology of the Tapetum Lucidum (among Selected Species.However, cats have a high activity of picolinic acid carboxylase, which converts one of the intermediates to picolinic acid instead of quinolinic acid."Nonhuman Primate Learning: The Importance of Learning from an Evolutionary Perspective".This tertiary source reuses information from other sources but does not name them.School of Medical Engineering, Georgia Institute of Technology.Archived from the original on Retrieved "Panthera".This condition, pica, can threaten their health, depending on the amount and toxicity of the items eaten.57 Cats average about 2325 cm (910 in) in height and 46 cm (18 in) in head/body hummus maken met tahin length (males being larger than females with tails averaging 30 cm (12 in) in length.

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250 During the Middle Ages, many of Artemis's associations with cats were grafted onto the Virgin Mary.