Crocodiles vs. alligators: Spotting the differences |

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Alligators and crocodiles may be hard to distinguish between, but they are indeed different creatures with distinct characteristics. While both species reside in saltwater and freshwater environments, they belong to different families within the Crocodylia genus. Alligators are part of the Alligatoridae family, while crocodiles belong to the Crocodylidae family.Despite these taxonomic differences, they share a number of similarities.
Both alligators and crocodiles are formidable predators, hunting similar kinds of prey such as fish, birds, mammals, and sometimes even larger animals. They possess powerful jaws and sharp teeth, making them efficient hunters in their respective habitats. Additionally, both species have specialised sensors called integumentary sensory organs (ISOs) located on their snouts and jaws. These sensors enable them to detect pressure changes and movement in the water, allowing them to precisely locate and capture their prey even in murky conditions. However, despite these similarities, there are notable differences between the two. Uncover them here.

Six key difference between crocodiles and alligators

S.No.
Characteristics
Crocodile
Alligator
1 Snout V-shape U-shape
2 Teeth Visible Not visible
3 Skin colour Olive or tan Black or grey
4 Behaviour Less aggressive More aggressive
5 Feet Webbed feet Separate toes
6 Location Freshwater Brackish

Crocodiles vs alligators

Alligators have a U-shaped snout, which is broader and shorter to crocodiles. This shape is well suited for their diets such as turtles. In contrast, crocodiles have a narrower, V-shaped snout that is more streamlined. This shape is helpful in catching small prey such as fish and small mammals.

The way alligators display their teeth is one of their distinguishing characteristics that helps set them apart from crocodiles. An alligator’s top jaw covers its lower jaw, making its teeth invisible while the mouth is closed. But crocodiles have a distinct fourth tooth on the lower jaw that sticks out when their mouth is closed, allowing people to see their teeth even when their jaws are closed.

The colouration of these reptiles is also a crucial point of distinction. Crocodiles are usually olive or tan in colour, which helps them blend into the sandy and muddy environments of their habitats. Alligators, however, are typically black or grey, which allows them to remain inconspicuous in their habitat.

These two animals can exhibit very different behaviours. Alligators and crocodiles are both formidable predators, although crocodiles tend to be more aggressive. Due to their territorial instincts, crocodiles are more inclined to attack people when they perceive a threat. In contrast, alligators are often more submissive and unlikely to act aggressively unless provoked or during the breeding season.

The webbed feet of alligators are perfect for swimming and offer superior propulsion in the water. They can move quickly and effectively in their aquatic habitats thanks to this adaptability. Crocodiles, on the other hand, have split toes, which make them less suited for swimming but give them greater movement on land and in mud.

The preferred habitats of alligators and crocodiles also differ. Crocodiles prefer freshwater environments such as rivers, lakes, and marshlands. Their bodies are well-suited for these habitats, allowing them to remain submerged and camouflaged while hunting. Alligators, on the other hand, often reside in brackish waters, which are mixtures of saltwater and freshwater found in coastal areas, estuaries, and swamps.
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