This article is from the WSSF 2013 AFRMA Rat & Mouse Tales news-magazine.
Did You Know? The head swaying the
pink-eyed rats do is called motion parallax. They have
poorer visual acuity than rats with pigmented eyes and do
this for depth perception. Also, by having no pigment in
the eyes, light causes retinal degeneration over time. So,
having rats in a brightly lit room is harmful to them. See
more in the Medical topic
Rats & Lyme Disease; Draining
Rats and Sunlight section.
To read more on rat vision, visit the
What Do Rats See?
page on the Rat Behavior and Biology web site.