Dogs see differently than humans. The reason lies within the eye. In the eye are light receptors called cones and rods. Cones help us distinguish different colors, while rods help us see in dim light.

Cones are responsible for day vision and color perception. Cats (and dogs) have a high concentration of rod receptors and a low concentration of cone receptors. Humans have the opposite ...

They detect brightness and shades of gray. Cones are responsible for day vision and color perception. Humans have a low concentration of rod receptors and a high concentration of cone receptors ...

ephrin receptors Dickson, 2002 GAP-43 Assist in critical decisions Amplify environmental signals Growth cone Strittmatter, Fankhauser, Huang, Mashimo, & Fishman, 1995 Glial cells or glial wedge ...