Cats Smell (Sensitivity)
Black Cat
Cats have an acute sense of smell, which is due in part to their well-developed olfactory bulb and also to a large surface of olfactory mucosa, in cats this mucosa is about 5.8 cm2 in area, which is about twice that of humans and only 1.7-fold less than the average dog. Cats respond strongly to the smell of nepetalactone, a compound found in catnip, and can detect this substance at less than one part per billion. Cats are also sensitive to pheromones such as 3-Mercapto-3-methylbutan-1-ol, ]which they use to communicate through urine spraying and marking with scent glands.
Black and white Cat
Due to a mutation in an early cat ancestor, one of two genes necessary to taste sweetness may have been lost by the cat family. Their taste buds instead respond to amino acids, bitter tastes and acids. To aid with navigation and sensation, cats have dozens of movable vibrissae (whiskers) over their body, especially their face. These provide information on the location of objects in the dark, both by touching objects directly and by sensing air currents; they also trigger protective blink reflexes to protect the eyes from damage.
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