Mammals are vertebrates, meaning they all have a spinal column, a defining trait of their classification. This backbone supports and protects the spinal cord, a vital part of the nervous system. It helps mammals move flexibly, whether it’s a cheetah sprinting, a dolphin gliding through water, or a monkey swinging from trees.
A spinal column also allows mammals to develop strong skeletal structures, supporting different body shapes and sizes. All mammals share this feature, from tiny bats to massive whales, even though they live in different environments.
In addition to their backbone, mammals have other key traits, such as warm-blooded bodies, hair or fur, and the ability to produce milk for their young. These characteristics set them apart from other vertebrates like birds, reptiles, and fish.
The spinal column is crucial for protecting the nerves that send messages between the brain and body, allowing mammals to react quickly to their surroundings. This ability helps them survive by sensing danger, finding food, and communicating with others. Without this backbone, mammals wouldn’t have the movement, strength, or coordination they need to thrive in their environments.
