Human color vision relies on three types of cone cells in our retinas that detect red, green, and blue wavelengths (trichromatic vision). However, animal color perception varies significantly across species:
- Birds and some insects can see ultraviolet light, which is invisible to humans
- Dogs are dichromats, having only two types of cone cells, making them partially colorblind compared to humans
- Butterflies have up to 15 different photoreceptors, allowing them to see a much broader spectrum of colors
- Some deep-sea creatures can only see in blue wavelengths due to their dark environment
These differences evolved based on each species’ survival needs and habitat. For example, bees’ UV vision helps them identify patterns on flowers that guide them to nectar sources.