What is most true about a horse's sensory capabilities?

Horses have a highly developed sense of smell, which plays a crucial role in their communication and interaction with their environment. They can detect pheromones, which are chemical signals that can convey information about reproductive status, identity, and even emotional states of other horses. This ability to perceive subtle scents is vital for social behavior and can influence their interactions and herd dynamics.

In contrast to some of the other statements, while horses may have limitations in distinguishing certain colors, they are not entirely colorblind; they can see a range of colors but not as vividly as humans. Their reliance on hearing is significant, but it is not the sole or predominant sense they use; rather, they use a combination of their senses to navigate their world. Additionally, horses possess a sense of taste that allows them to enjoy and select food appropriately, debunking the idea that they cannot taste food at all. Thus, the understanding of a horse’s sensory capabilities emphasizes the importance of their sense of smell, particularly in detecting pheromones.