Although some canine breeds may be predisposed to dislike water, any dog can develop an aversion to the element as a result of negative experiences.
Chihuahuas have a poor tolerance for cold temperatures and often avoid water as a result.
The combination of their short snouts and flat faces makes it difficult for them to take a deep inhalation while swimming or otherwise being submerged.
Their short, sleek coat does not shield them well from the chill of the water or act as an insulator.
Their short, thin coats make it difficult for them to keep warm in the water, and their delicate skin easily burns in the heat.
It's difficult for them to swim because of their unusual physique. They are not suited for deep seas due to their short height.