Here's why:
* Tapetum Lucidum: Like many nocturnal animals, ferrets have a tapetum lucidum, a reflective layer behind the retina that amplifies light. This allows them to see better in low light conditions.
* Rods and Cones: Ferrets have a higher concentration of rods, the light-sensitive cells responsible for vision in dim light, than cones, which are responsible for color vision. This means they can see better in low light but have less color vision.
* Limited Night Vision: While ferrets can see better than humans in the dark, they don't see as well as cats or owls. Their night vision is still limited compared to other nocturnal animals.
In summary: Ferrets have better night vision than humans but are not perfectly adapted for seeing in complete darkness. Their vision is a good balance between day and night, allowing them to function well in both light and low light conditions.