What prehension method do horses primarily use?

Horses primarily use their lips as the main method of prehension when it comes to grasping and manipulating food. The lips of a horse are highly sensitive, allowing them to feel and select items with precision. This sensitivity enables horses to effectively forage, as they can discern between different types of vegetation and pick out the most suitable food. Unlike animals that may use hands or other appendages, horses rely on their lips to grasp the grass or hay they consume.

Additionally, while horses can use their tongues to help transport food towards the back of their mouths, the initial act of prehension is predominantly accomplished with their lips. Their lips can also play a role in additional behaviors, such as social interactions or investigating their environment. This anatomical adaptation is specifically suited for their digestive needs and foraging behaviors in a natural setting.