Do dogs have brown eyes

Answer 1

If you are asking will an old dogs eyes turn blue they can appear that way. Many dogs will develop cataracts as they age which will cause their eyes to appear hazy or bluish in the right light. This is pretty normal for dogs in the 13 year and up range.

Answer 2

Yes, they do. This is so because because a brown iris has more melanin and can therefore pick up on light with ease, which comes handy to dogs if you consider that they're hunters. However, dogs --like humans--, can suffer from eye disease which changes the color of their eyes in rare cases; the most common in this case are cataracts and heterochromia.

Answer 3

Primarily, eye color is determined by genetics. Although irises come in different colors, they actually only contain brown pigment. When an iris has alot of brown pigment, the eyes appear brown or dark. When the amount of brown pigment is small and is only on the back surface of the iris, the shorter wavelengths of light are scattered from the unpigmented portions and eyes appear blue, green or gray. This effect is similar to the scattering of light that makes the sky appear blue. The iris pigment may not be fully developed at birth so alot of young animals eyes may appear blue or gray at first until their pigmentation fully develops. Sometimes, one eye may contain more pigmentation than the other, making the eye colors within one individual distinctly different. Siberian Huskies are one of the breeds that commonly display this trait.

Answer 4

No, purebred greyhounds do not have blue eyes.