Alligator vs Giant Boa: Who Would Win in a Fight?

Written by Kyle Glatz
Published: May 13, 2022
© RICIfoto/
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Alligators are very large reptiles with a reputation for fierce attacks. Not only can they regularly take down deer and dogs and other mammals in their range, but alligators can kill people! Yet, the Florida Everglades and other areas where alligators live are often dumping grounds for exotic snakes, giving gators some interesting competition for food. Let’s imagine that the largest variant of the common boa constrictor, also called the red-tail boa, made its way to Florida and found itself facing a gator. In this alligator vs giant boa fight, which animal would emerge as the winner?

Let’s take a close look at the available facts and determine which of these reptiles would make it out alive!

Comparing an Alligator and a Giant Boa

Alligators have a massive size advantage.


AlligatorGiant Boa
SizeWeight: 400lbs to 800lbs (sometimes more)
Height: 1ft – 2ft off the ground
Length: 8.2 feet to 11.2 feet long
Weight: 60lbs-100lbs
Length: 3ft-13ft
Speed and Movement Type– 30 mph over short distances on land
– Up to 20 mph in the water
– Locomotion includes swimming and scampering on the ground
– 1 mph on land
– Can move faster while swimming  
Defenses– Camouflage
– Thick skin
– Speed
– Hissing threat display
– Spends time in trees, keeping it safe from some predator
– Colors help the snake blend in their environments  
Offensive Capabilities2,980 PSI bite power
– Roughly 80 2” teeth
Death roll can instantly amputate limbs or flesh
– Repeated chomping can puncture organs while holding prey in place
– Attacks by first grabbing prey with its teeth and then coiling around the animal
– Constricts the prey, reducing blood flow to vital organs and overwhelming their circulatory system  
Predatory Behavior– Ambush prey by keeping eyes and nostrils above water
– Typically attacks by ambushing from the water
– Clamp onto enemies and use a death roll
– Ambush predator that waits for prey and launches an attack
– May also be an opportunistic predator in some cases    

What Are Key Differences Between an Alligator and a Giant Boa?

Largest Alligators
Alligators are lizard-like reptiles that launch vicious attacks on their prey.


The most significant differences between alligators and giant boas include their morphology and how they attack their prey. Alligators are huge, lizard-like reptiles with long snouts, large mouths, long tails, and scaly skin that ambush their prey and bite it to death. Giant boas are long and girthy snakes with triangular heads that coil around and constrict their prey to death.

Both reptiles are deadly in their own right. However, we have to look even closer if we want to figure out which of them would win a battle!

What Are the Key Factors in a Fight Between an Alligator and a Giant Boa?

What Do Boa Constrictors Eat - Boa on Tree
A common boa is a large constrictor that squeezes its prey to death.

©Jan Hejda/

The most important factors in a fight between an alligator and giant boa include aspects like size, attack methods, and defense.

We’re going to explore those three elements along with two others, determine which animal has the advantage for each category, and then use all the data we have gathered to decide the winner in the final section. Let’s see what these reptiles are made of!

Alligator vs Giant Boa: Size

Alligators are larger than giant boas. The average alligator will reach a weight between 400 and 800lbs and measure up to 11.2ft long. The largest alligators that have been seen, caught, or killed weighed close to or over 1,000lbs, measuring up to 14 long!

Giant boas, while large for snakes, are not all that big compared to snakes like the anaconda. Boas typically weigh between 60lbs and 100lbs, though the latter measurement is rare. Also, they will grow between 3 and 13ft long. Again, the 13ft measurement is relatively rare.

Alligators have the size advantage in both measurements on average.

Alligator vs Giant Boa: Speed and Movement

Alligators are faster than giant boas. On land, alligators can move at speeds between 2 to 9 mph, but they can quickly dash at speeds up to 30 mph over short distances. Moreover, they can swim at speeds up to 20 mph when closing in on their prey.

Boas are very slow-moving snakes. They tend to reach speeds of 1 mph on land, and they can swim slightly faster at their utmost.

Alligators have the speed advantage in this fight.

Alligator vs Giant Boa: Defenses

Alligators have superior defenses compared with a giant boa. Although boa constrictors can spend a lot of their time in trees, they tend to spend more time on the ground as they get older. Their colors can help them blend in no matter where they are, though.

Alligators have thick, scaly skin that resists penetration along with camouflage in the water. Their dark skin makes it hard to see them in the waters they call home. Furthermore, they have a lot of speed to help them get out of harm’s way.

Alligators have the defensive advantage in this fight.

Alligator vs Giant Boa: Offensive Capabilities

Giant boas are known for constricting their prey to death. They start by launching a biting attack on their prey, anchoring themselves to the unlucky animal. Next, they coil their bodies around their prey and start constricting.

These snakes squeeze their prey, causing their circulatory system to fail since it can’t pump blood to their organs. They do not suffocate their victims to death.

Alligators are brutal and straightforward with their attacks. They will bite and chomp on their prey until it’s dead, thrash it back and forth, or use a death roll to amputate a piece of its body. Their teeth are 2 inches long, and they have one of the strongest bites in the animal kingdom at 2,980 PSI!

Alligators have the offensive advantage in this fight for their diverse attack methods.

Alligator vs Giant Boa: Predatory Behavior

Giant boas are usually ambush predators that wait for their prey to walk by before they strike. Sometimes, they are opportunistic, seeking prey at night when they’re safest.

Alligators are ambush predators that often strike near the water’s edge. They launch themselves out of the water, grab prey, and try to drag it into the water to further disorient and drown it. They can also be opportunistic predators if the animal is smaller than them.

Both animals use the same methods of predation, so we’re calling this a tie.

Who Would Win in a Fight Between an Alligator and a Giant Boa?

Alligators are too much for a boa to overcome.

©Allen McGregor / Flickr

An alligator would win a fight against a giant boa. Most of the fights in the wild are decided by size or the presence of a particularly deadly attack, like venom. In this case, the boa is much smaller than the alligator and has to wrap its body around the reptile to kill it.

Let’s imagine that the boa lands a bite and starts coiling around the alligator. The large alligator would counter this ambush with vicious bites at the boa’s head. Even if it can’t reach the head, the gator would chomp and thrash the rest of the snake’s body while it tries to coil around it. The gator’s attacks will cause severe bleeding, punctured organs, and broken bones.

These snakes are barely long enough to wrap around a fully grown alligator enough to constrict it effectively and even attempt to kill it in the best case.

The alligator would probably counter a giant boa’s ambush, and it would certainly eliminate a boa quickly in an ambush of its own. The snake would approach some brackish water for a sip and get snatched up and dragged below the water by the massive, powerful, violent gator. That would be the start and grisly end of the fight.

The Featured Image

Strongest animal bite – American alligator
As they develop and mature, an American alligator's teeth and jaws change significantly.
© RICIfoto/

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About the Author

I'm a freelance writer with 8 years of experience. I've written in a variety of niches such as video games, animals, and managed service providers. I graduated from Rowan University in 2014 with degrees in English and Education. When I'm not working, I enjoy playing video games, reading, and writing for fun.

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