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Alvaro Velasco, 66, a biologist and president of the Group of Crocodile Specialists of Venezuela (GECV), helps an Orinoco crocodile hatch from its egg at the Leslie Pantin Zoo in Turmero, Aragua State, Venezuela, April 21, 2025. REUTERS/Gaby Oraa
Photography and reporting by Gaby Oraa
Reporting by Efrain Otero
Venezuelan biologist Carlos Alvarado, 34, has one hand on the young crocodile’s neck and another on its tail. With the help of some tape and calipers, he is measuring it, tracking its growth a few days before it will be released into the wild.
Alvarado’s story - and that of the Orinoco crocodile he is caring for - is a tale of hope and persistence in the face of overwhelming odds.
Fewer than 100 Orinoco crocodiles - one of the largest living reptiles in the world - remain in the wild, according to Venezuelan conservation foundation FUDECI. The animal’s natural habitat is in the Orinoco River basin, which covers most of Venezuela and spills into Colombia.
For decades, the men and women of the Venezuelan Crocodile Specialist Group have been raising younglings of the critically endangered species in captivity in a race against time to avoid its extinction.
But they say they are losing that race. Decades of poaching for leather pushed the Orinoco crocodile to the brink, and now struggling Venezuelans who hunt the animals for meat and take their eggs for food threaten to deal the final blow. The members of the Crocodile Specialist Group are not getting any younger - and the next generation of biologists has mostly fled turmoil in Venezuela for jobs elsewhere.
Alvarado remains alone to take up the baton. It is, he says, “a great responsibility.” He has a sense of mission. He is trying to persuade university students to take part in the conservation effort.
Federico Pantin, 59, is not optimistic. He is director of the Leslie Pantin Zoo in Turmero, near Caracas, which specializes in endangered species and is one of the places where the crocodile hatchlings are raised.
“We’re only delaying the Orinoco’s extinction,” he says.
Pantin and his colleagues keep on going, however - researching, measuring, transporting.
The scientists log the sites where the long-snouted Orinoco are known to nest, collecting their eggs or hatchlings. They also breed captive adults kept at the zoo and at Masaguaral Ranch, a biodiversity center and cattle farm near Tamarindito in central Venezuela.
Drone view of the Orinoco crocodile captive breeding center at Hato Masaguaral, a captive breeding center near Tamarindito, Guarico State, Venezuela, April 22, 2025.
REUTERS/Gaby Oraa
The scientists raise the babies, feeding them a diet of chicken, beef and vitamins until they are about a year old and grow to a weight of around 6 kg (13 lb).
Adult Orinocos can reach over 5 meters (16 ft) in length, and can live for decades - a 70-year-old named Picopando resides at Masaguaral Ranch. The adults have tough, bony armor, fierce jaws and sharp teeth. They are not to be trifled with.
But when they are first hatched, a researcher can cradle one in their hands.
Crocodile skins are made up of scales that are raised on the back, protecting the animals in fights with other crocodiles. Scales on the belly are flatter, lending a smoother texture; it is this part of the crocodile that is traditionally used in the leather industry.
Adult male Orinoco crocodiles grow to weigh some 840 lb (380 kg) and can measure over 16 ft (5 m) long. A crocodile’s tail is powerful and muscular, enabling it to move fast through water and lunge at prey.
The species is an apex predator - one at the top of the food chain - and one of the world’s largest living reptiles.
Omar Hernandez, 63, biologist and head of FUDECI, tags the tiny foot of a hatchling at the Leslie Pantin Zoo. To save the species, a number of efforts would be necessary, he says: research, protection, education, and management.
“We are doing the management, collecting the hatchlings, raising them for a year and freeing them,” he says. But “that is practically the only thing being done. And it is not being done at scale.”
Every year the group releases around 200 young crocs into the wild.
The biologists wait until they are a year old as that is the most critical period in their life, Hernandez says. It is when they are young that “almost all are hunted.”
In April, Reuters accompanied the scientists as they released this year’s batch. The young animals were placed in crates, their jaws bound, for the journey from the zoo to the Capanaparo River, deep in western Venezuela not far from the Colombian border, where human habitations are few and far between. This part of the river passes through private land, reducing the likelihood that the animals will immediately be hunted.
Alvaro Velasco, 66, who has a tattoo of an Orinoco crocodile on his right shoulder, covered the eyes of a juvenile with tape to avoid it becoming stressed during the journey.
“People ask me, ‘Why crocodiles? They’re ugly,’” said Velasco, president of the Crocodile Specialist Group. “To me, they’re fabulous animals. You release them and they stay there, looking at you, as if to say ‘What am I supposed to do in this huge river?’ And then they swim off.”
Alvaro Velasco, 66, a biologist and president of the Group of Crocodile Specialists of Venezuela (GECV), shows a tattoo of an Orinoco crocodile on his shoulder, in the Terepaima Ranch near Elorza, Apure State, Venezuela, April 24, 2025. REUTERS/Gaby Oraa

Photography and reporting by Gaby Oraa
Reporting by Efrain Otero
Venezuelan biologist Carlos Alvarado, 34, has one hand on the young crocodile’s neck and another on its tail. With the help of some tape and calipers, he is measuring it, tracking its growth a few days before it will be released into the wild.
Alvarado’s story - and that of the Orinoco crocodile he is caring for - is a tale of hope and persistence in the face of overwhelming odds.
Fewer than 100 Orinoco crocodiles - one of the largest living reptiles in the world - remain in the wild, according to Venezuelan conservation foundation FUDECI. The animal’s natural habitat is in the Orinoco River basin, which covers most of Venezuela and spills into Colombia.
For decades, the men and women of the Venezuelan Crocodile Specialist Group have been raising younglings of the critically endangered species in captivity in a race against time to avoid its extinction.
But they say they are losing that race. Decades of poaching for leather pushed the Orinoco crocodile to the brink, and now struggling Venezuelans who hunt the animals for meat and take their eggs for food threaten to deal the final blow. The members of the Crocodile Specialist Group are not getting any younger - and the next generation of biologists has mostly fled turmoil in Venezuela for jobs elsewhere.

Alvarado remains alone to take up the baton. It is, he says, “a great responsibility.” He has a sense of mission. He is trying to persuade university students to take part in the conservation effort.
Federico Pantin, 59, is not optimistic. He is director of the Leslie Pantin Zoo in Turmero, near Caracas, which specializes in endangered species and is one of the places where the crocodile hatchlings are raised.
“We’re only delaying the Orinoco’s extinction,” he says.
Pantin and his colleagues keep on going, however - researching, measuring, transporting.
The scientists log the sites where the long-snouted Orinoco are known to nest, collecting their eggs or hatchlings. They also breed captive adults kept at the zoo and at Masaguaral Ranch, a biodiversity center and cattle farm near Tamarindito in central Venezuela.

Drone view of the Orinoco crocodile captive breeding center at Hato Masaguaral, a captive breeding center near Tamarindito, Guarico State, Venezuela, April 22, 2025.
REUTERS/Gaby Oraa
The scientists raise the babies, feeding them a diet of chicken, beef and vitamins until they are about a year old and grow to a weight of around 6 kg (13 lb).
Adult Orinocos can reach over 5 meters (16 ft) in length, and can live for decades - a 70-year-old named Picopando resides at Masaguaral Ranch. The adults have tough, bony armor, fierce jaws and sharp teeth. They are not to be trifled with.
But when they are first hatched, a researcher can cradle one in their hands.
The Orinoco crocodile’s natural habitat is the Orinoco River basin, straddling Venezuela and Colombia. Hunted previously for their skins and now for their meat, they are regarded as critically endangered.Crocodiles have eyes that have evolved to make them excellent hunters, with a wide-angle view, a lens cover for underwater, and enhanced night vision. When a light is shone on them at night, their eyes reflect red - enabling them in turn to be more easily found and hunted by humans.
Crocodile skins are made up of scales that are raised on the back, protecting the animals in fights with other crocodiles. Scales on the belly are flatter, lending a smoother texture; it is this part of the crocodile that is traditionally used in the leather industry.
Adult male Orinoco crocodiles grow to weigh some 840 lb (380 kg) and can measure over 16 ft (5 m) long. A crocodile’s tail is powerful and muscular, enabling it to move fast through water and lunge at prey.

The species is an apex predator - one at the top of the food chain - and one of the world’s largest living reptiles.
Omar Hernandez, 63, biologist and head of FUDECI, tags the tiny foot of a hatchling at the Leslie Pantin Zoo. To save the species, a number of efforts would be necessary, he says: research, protection, education, and management.
“We are doing the management, collecting the hatchlings, raising them for a year and freeing them,” he says. But “that is practically the only thing being done. And it is not being done at scale.”
Every year the group releases around 200 young crocs into the wild.
The biologists wait until they are a year old as that is the most critical period in their life, Hernandez says. It is when they are young that “almost all are hunted.”
In April, Reuters accompanied the scientists as they released this year’s batch. The young animals were placed in crates, their jaws bound, for the journey from the zoo to the Capanaparo River, deep in western Venezuela not far from the Colombian border, where human habitations are few and far between. This part of the river passes through private land, reducing the likelihood that the animals will immediately be hunted.
Alvaro Velasco, 66, who has a tattoo of an Orinoco crocodile on his right shoulder, covered the eyes of a juvenile with tape to avoid it becoming stressed during the journey.
“People ask me, ‘Why crocodiles? They’re ugly,’” said Velasco, president of the Crocodile Specialist Group. “To me, they’re fabulous animals. You release them and they stay there, looking at you, as if to say ‘What am I supposed to do in this huge river?’ And then they swim off.”

Alvaro Velasco, 66, a biologist and president of the Group of Crocodile Specialists of Venezuela (GECV), shows a tattoo of an Orinoco crocodile on his shoulder, in the Terepaima Ranch near Elorza, Apure State, Venezuela, April 24, 2025. REUTERS/Gaby Oraa