why can't most animals see colors and which can?

Answer 1

(In the animal kingdom, sight is accomplished by using either rods or cones
on the retina of the eye. Animals that see black and white and shades of
gray have only the rods in their retina. Animals that see color have both
rods and cones; the cones are for color, but require a lot more light to
stimulate. The bottom line is that animals that see color are diurnal
[daylight] and black and white vision is for nocturnal [night] vision. If
an animal does not see color, it is adapted to night vision

Answer 2

Can Animals See Colors

Answer 3

The retina is the back part of the eye that contains the cells that respond to light. These specialized cells are called photoreceptors. There are 2 types of photoreceptors in the retina: rods and cones.
The rods are most sensitive to light and dark changes, shape and movement. Rods are not really good for color vision.
The cones are not as sensitive to light as the rods. However, cones are most sensitive to one of three different colors (green, red or blue). Signals from the cones are sent to the brain which then translates these messages into the perception of color. Cones, however, work only in bright light.
Most predatory animals such as cats, and hawks contain more rods in the retina than cones which enable them to see movement in the dark and to catch thier prey.

Answer 4

Some animals see fewer colors than we can. For example, dogs see primarily in shades of yellow and green because they do not have the receptors for red. Cats do have some color receptors (cones) but mostly see in shades of gray. Bees, although not strictly animals but insects, see mostly in the ultraviolet because that is what flowers reflect the most.

Answer 5

A general rule of thumb is if the male or female of a species is brightly colored then that species is probably not color blind. I believe that all the primates also see color as well as dogs, cats, some birds, fish, and insects.