What Is The Difference Between A Crocodile And An Alligator?

Considered to be reptilian cousins, the crocodile and the alligator share several similarities. However, these animals have unique physical appearances, habitat preferences, and behaviors that make them stand out from each other. Distinguishing between a crocodile and an alligator may seem challenging at first glance, but upon closer examination, you will notice several key differences that make each species unique.

Physical Differences

While both crocodiles and alligators belong to the same order, Crocodilia, their physical differences are key in telling them apart. Let’s examine how these two species differ in appearance.


  • Shorter, U-shaped snout
  • Teeth are hidden when mouth is closed
  • Darker in color, usually black or dark gray


  • Longer, V-shaped snout
  • Teeth are visible when mouth is closed, with the fourth tooth on the lower jaw protruding prominently
  • Lighter in color, with an olive or light brown hue

It’s worth mentioning that both species have armored skin with bony plates called osteoderms, providing them with a natural layer of protection.

Habitat and Distribution

There is a distinct difference between crocodiles and alligators when it comes to their habitat preferences, which directly affects their geographical distribution.


  • Prefer freshwater habitats, such as swamps, rivers, and lakes
  • Mainly found in the southeastern United States and parts of China
  • Lack salt-excreting glands, making them less suited to saline environments


  • Prefer saltwater or brackish habitats
  • Can be found in Africa, Asia, Australia, and the Americas
  • Possess specialized glands that allow them to excrete excess salt, making them more adaptable to saline environments

Overlapping habitats:

Despite their generally different environments, crocodiles and alligators can co-habit the same area. For example: 

  • Southern Florida in the United States, where the American alligator and the American crocodile coexist
  • The Everglades National Park in Florida, a unique ecosystem that features both freshwater and brackish water environments
  • Some coastal regions in Central and South America, where suitable habitats for both species can be found in close proximity

Even though they differ in many ways, both species are known for their adaptability, with some individuals traveling to each other’s habitats occasionally.

Hunting and Eating Habits

Alligators and crocodiles are both apex predators that have some similarities, including their methods of hunting and diets. However, there are notable distinctions in their hunting technique and preferred prey.


  • Primarily feed on fish, turtles, and small mammals
  • Rarely hunt in groups, except when there is an abundance of food available
  • Less likely to attack humans, unless provoked or defending their nests


  • Opportunistic predators that eat fish, birds, mammals, and even other reptiles
  • Known to hunt in groups, particularly for larger prey
  • Can be more aggressive and likely to attack humans

It’s important to note that both species are ambush predators, relying on stealth and camouflage to capture their prey.


Despite their similarities as members of the Crocodilia order, crocodiles and alligators differ in their physical features, habitat preferences, and hunting habits. Understanding these differences is vital both for educational purposes and in order to conserve and appreciate these fascinating reptiles.