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Normal human ears can discriminate between two frequencies that differ by as little as 0.2%. [14] If one ear has normal thresholds while the other has sensorineural hearing loss (SNHL), diplacusis may be present, as much as 15–20% (for example 200 Hz one ear => 240 Hz in the other).
The upper fur on this species is grayish, with darker underfur and darker near the ears and face. The underside is yellowish to whitish, with some gray colors near the sides, between the forearms, and on the bottom of the neck and jaw. It has two spots above each eye that are the same color as the underside.
Cats can see some colors and can tell the difference between red, blue and yellow lights, as well as between red and green lights. [5] Cats are able to distinguish between blues and violets better than between colors near the red end of the spectrum, but cats cannot see the same richness of hues and saturation of colors that humans can. [2]
When angry or frightened, a cat will lay back its ears to accompany the growling or hissing sounds it makes. Cats also turn their ears back when they are playing or to listen to a sound coming from behind them. The fold of skin forming a pouch on the lower posterior part of the ear, known as Henry's pocket, is usually prominent in a cat's ear. [6]
The superior part of the Müllerian ducts do not fuse and form the left and right fallopian tubes. Disruptions to this stage of development can result in didelphys or bicornuate uteri anomalies. [8] In both didelphys and bicornuate uteri, the non-fusion of the Müllerian ducts results in two distinct uterine cavities.
“For cats, primary humans are adored, and spare humans are to be tolerated,” says the very spare human in this video. But just because you are not a cat’s favorite person doesn’t mean you ...
Marsupials have the typical characteristics of mammals—e.g., mammary glands, three middle ear bones, (and ears that usually have tragi, [3] varying in hearing thresholds [4]) and true hair. [5] There are, however, striking differences as well as a number of anatomical features that separate them from eutherians .
Dr. Laura Purdy, chief medical officer at Wisp, a sexual health care group, says that “uterus didelphys is rare,” only accounting for 8% of the congenital anomalies of the female reproductive ...