1. Fur:
Fur is the most common covering among mammals. It consists of dense hair that can be short, long, soft, or coarse, depending on the species. Fur provides insulation, helping mammals maintain their body temperature in various environments. It acts as a barrier against external temperatures, keeping them warm in cold climates and cool in hot climates. Additionally, fur can serve as camouflage, allowing mammals to blend into their surroundings and hide from predators or prey.
2. Hair:
Some mammals, such as humans, have hair instead of fur. Hair is typically shorter and less dense compared to fur. While it provides insulation to a certain extent, its primary functions include protection and communication. Hair can also play a role in sensory perception, as in the case of whiskers or eyebrows in some species.
3. Scales:
A few mammal species, like pangolins and armadillos, have scales covering their bodies. These scales are made of keratin, the same protein found in human nails. Scales offer strong protection against predators and external injuries. They can be flexible, allowing for movement, or rigid, providing additional structural support.
These coverings are distinctive adaptations that have evolved in mammals over millions of years. They contribute significantly to the survival, reproduction, and overall success of different mammal species in diverse ecosystems.