8 Types of VENOMOUS Snakes in Mozambique! (2023)
Do you want to learn about the types of venomous snakes in Mozambique?
If so, you have come to the right place. In the article below, I have listed the MOST COMMON venomous snakes you can expect to see. If I missed any, please leave a Comment at the bottom of the page. 🙂
You’ll see that the venomous snakes in Mozambique are very different from each other. They have different sizes, habitats, and even different types of venom. In addition, certain snakes are common to find living around people. For each species, you will find out how to identify that snake correctly, along with pictures, interesting facts, and RANGE MAPS!
Venomous Snakes that Live in Mozambique:
#1. Puff Adder
- Bitis arietans
Also known as the African Puff Adder and Common Puff Adder.
- Adults are 100-150 cm (39-59 in) long.
- They are commonly gray to dusty brown, with yellow chevrons on their backs.
- There are two dark bands on the head, one on the crown and one between the eyes.
- Male Puff Adders are usually larger than females.
Puff Adders are one of the most dangerous venomous snakes in Mozambique.
This ill-tempered native snake roams savannas, grasslands, and – to the great misfortune of inhabitants – densely populated areas. The Puff Adder gets its name from how it inflates itself when threatened. Instead of moving away, it will hiss a warning to intruders before inflating and striking.
Its distinctive yellow, white, and brown chevron pattern allows the Puff Adder to blend into its surroundings. This camouflage is particularly useful for its lifestyle as an ambush predator. Be careful where you wander because this highly-venomous, fast-striking snake seems to come out of nowhere.
The Puff Adder’s venom contains a cytotoxin that can kill a healthy adult human within a day. Their potent poison and tendency to loiter around footpaths make this snake one to avoid. Watch your step!
- Dispholidus typus
Also known as Common African Tree Snake, Kivu Boomslang, and Kivu Large Green Tree Snake
- Adults are usually 100-160 cm (39-63 in) long.
- Coloration varies greatly, allowing these snakes to camouflage in different terrains.
- Generally, males are light green, scaled with black and blue, and females are brown.
- Boomslangs have an egg-shaped head and notably large eyes.
This slender venomous snake makes its home in low-lying trees in Mozambique.
In fact, its common name, “Boomslang,” means “tree snake” in Afrikaans and Dutch. Be careful within this species’ range because the next vine you pull might become a deadly encounter!
This snake’s venom is highly potent, causing bleeding and death for humans, even in small doses. However, compared to front-fanged snakes, which release large amounts of venom at once, rear-fanged snakes like the Boomslang inject small amounts of venom in quick succession.
When confronted, the Boomslang will freeze and then swing its head from side to side before quickly attacking. Fortunately, Boomslangs won’t attack humans except as a last resort. If you are bitten, seek immediate treatment. Victims might get a false sense of safety because the venom is slow-acting, but many people have died from internal bleeding hours later.
#3. Gaboon Viper
- Bitis gabonica
Also known as Gaboon Adder, Forest Puff Adder, Butterfly Adder, Whisper, Swampjack
- Their typical size is 80–205 cm (31-81 in) long.
- Females are heavy and stout, while males have longer tails in proportion to their body length.
- You’ll see faded, rectangular blotches down the snake’s back, with yellowish hourglass-shaped marks along the gaps.
The Gaboon Viper boasts the longest fangs of any venomous snake in Mozambique!
Incredibly, they can grow up to 6 cm (2.3 in) long. This is one snake you definitely want to steer clear of!
Interestingly, its fangs aren’t the only unusual thing about this species. It also has the highest venom yield of any snake worldwide because of its hunting style. Unlike most vipers, it doesn’t release once it engages in a bite, injecting massive amounts of venom into its prey.
Watch your step because this nocturnal viper has near-perfect camouflage. It’s practically invisible amid fallen leaves on the forest floor and can remain motionless for hours hunting small birds and mammals.
The Gaboon Viper’s venom can be fatal in large doses or cause severe necrosis in the bite area. Fortunately, bite incidents are rare. These snakes are normally non-aggressive, sluggish, and are only encountered in dense rainforests.
#4. Twig Snake
- Thelotornis capensis
Also known as Cape Twig Snake, Savanna Vine Snake, Southern Bird Snake, Cape Twig Snake
- These are slender snakes with very long tails, measuring 100-168 cm (39-66 in) in total length.
- Look for a flattened bluish-green head, keyhole-shaped pupils, large black fangs, and a reddish-black tongue.
- Body coloration is brown or gray with blotches.
As the name suggests, you might mistake this venomous snake in Mozambique for a twig!
Twig Snakes hang perfectly still on branches of low shrubs, waiting for passing chameleons, frogs, and birds. They are patient predators and can maintain this posture for hours. When disturbed, they inflate their necks like a balloon as a scare tactic.
Take great care when trekking through coastal forests and woodlands. Its coloration allows it to blend in with the bark and branches of trees. Although it’s unassuming, the Twig Snake is venomous and very dangerous.
The Twig Snake’s venom is a slow-acting poison that can cause profuse bleeding and hemorrhage. One German herpetologist, Robert Mertens, died 18 days after being bitten by his pet Twig Snake. So, get quick medical treatment for a bite even if you don’t have immediate symptoms.
#5. Eastern Green Mamba
- Dendroaspis angusticeps
- Adults are 1.8 – 2m (6 – 6.5 ft) long.
- They have long, slender bodies, narrow, coffin-shaped heads, and short, fixed fangs.
- They have smooth, bright-green scales that overlay darker skin. This contrast gives them the appearance of paving stones.
Despite their showy appearance, these venomous snakes are a shy, elusive species in Mozambique.
Their intense green coloring allows them to blend in with their leafy habitat seamlessly. Eastern Green Mambas are adept climbers and spend most of their time in dense rainforests, coastal bush, and montane forests. Unlike their well-known and feared relative, the Black Mamba, you’re unlikely ever to spot Eastern Green Mambas in open areas.
These venomous snakes in Mozambique are also mostly sedentary. One study found that they only move about 5.5 m (18 ft) per day! Eastern Green Mambas are most active during the day and spend their nights sleeping on branches or in tree trunk hollows. During the day, they hunt by ambushing birds, rodents, and reptiles that cross their paths.
Eastern Green Mambas are the least venomous of the three green mambas and are considered less dangerous than the Black Mamba. Regardless, these beautiful snakes are still highly venomous, and you should treat them with respect and caution.
If they feel cornered or are grabbed, they will bite repeatedly. A bite from an Eastern Green Mamba can cause pain, swelling, gangrene, necrosis, dizziness, nausea, convulsions, irregular heartbeat, and other severe symptoms. If you’re bitten, seek medical help right away.
#6. Snouted Night Adder
- Causus defilippii
- Adults are 20-50 cm (8 to 20 in) long.
- They have a prominent, upturned snout and a V-shaped marking on their heads.
- Their coloring is light brown, pinkish brown, gray, or greenish-gray with dark crescent-shaped markings down their backs.
You can find Snouted Night Adders in savannas, coastal thickets, and forests. While you may occasionally spot them on dry, rocky hillsides, their favorite places are close to wet areas where their prey is abundant.
These interesting little snakes are specially adapted to feed on frogs and toads! Snouted Night Adders have a pointed, upturned snout that allows them to dig toads and frogs from their hiding places. They’re also surprisingly athletic and often climb into low branches or take to the water and swim in pursuit of prey.
They are rather slow-moving snakes but are capable of striking quickly if provoked. While bites are rare, you should still use caution. Snouted Night Adder venom causes rapid swelling, fever, swollen lymph nodes, and intense pain. Typically the symptoms subside in about three days, but you should see a doctor right away.
#7. Mozambique Spitting Cobra
- Naja mossambica
- Adults are 91-106 cm (36-42 in) long.
- Their back may be slate to blue, olive, or tawny black, while their underside is salmon-pink to purple-yellow with black bars on their throats.
- They have hoods on their necks, which they expand when threatened.
You’ll have to stay up late to find these venomous snakes in Mozambique.
Mozambique Spitting Cobras are nocturnal and terrestrial, hunting at night and spending most of their days hidden away in crevices, holes, and termite hills. But if you run into one, watch out! Mozambique Spitting Cobras are considered one of the most dangerous species in Mozambique.
Mozambique Cobras are nervous and quick to attack when they feel threatened. They rear up, lifting up to two-thirds of their body off the ground, spreading their hood, and spitting at their attacker’s eyes. They can spit 1.8-2 m (6-7 ft) with surprising accuracy. If their attacker gets close, they strike with a vicious bite.
Their venom contains both cytotoxins and neurotoxins. If the venom gets into a victim’s eyes, it can cause permanent damage and blindness. In addition, bites cause severe pain, swelling, necrosis, vomiting, respiratory distress, and dizziness. Without immediate medical attention, the symptoms can be deadly.
Mozambique Cobras are incredible predators that feed on birds, amphibians, eggs, small mammals, carrion, and other snakes. Most incredibly, these dangerous cobras will even attack the notorious Black Mamba and have developed an immunity to their venom.
#8. Snouted Cobra
- Naja annulifera
- Adults are 1.2-2.5 m (4-8 ft) long.
- They have impressively large hoods.
- Their varied coloring may be yellowish, grayish-brown, dark brown, or blue-black, sometimes with contrasting bands on their backs.
Snouted Cobras live in moist and dry savannas in Mozambique. They prefer areas with predominately thorny, shrubby vegetation or open woodland interspersed with openings of long grass. They spend most of their time near a favorite retreat, like an abandoned termite mound. If left undisturbed, they’ll use the same retreat for years.
During the day, they like to bask in the sun near their shelter, and they come out to hunt at dusk. Snouted Cobras actively seek prey and feed on birds, bird eggs, lizards, rodents, toads, and other snakes, especially Puff Adders. Around human dwellings, they’ll often raid chicken houses and can become a nuisance.
While they’re not aggressive, Snouted Cobras will defend themselves. They lift the front portion of their body off the ground, open an impressive neck hood, and hiss. Occasionally, they play dead, but this behavior is rare in this species. However, if further threatened, they will strike.
Snouted Cobras have a potent neurotoxic venom. Bites on humans are often at night on the lower leg. They can cause difficulty breathing, pain, swelling, and blistering. If left untreated, they can result in respiratory failure and death. Seek medical treatment immediately if you are bitten!
Did you know that snakes are considered venomous, NOT poisonous?
There currently is a common misconception between poisonous and venomous, one is ingested, and the other is injected. So, for example, If you eat something that makes you sick, then it is considered “poisonous.” But if an animal, like a snakes, delivers its toxins when it bites, then it’s considered “venomous.”
Learn more about animals found in Mozambique in these ID Guides:
Which of these venomous snakes have you seen before in Mozambique?
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