The Moscow Zoo and an Indian wildlife rescue center are working to relocate 80 hippos from Colombia descended from animals once owned by the drug lord

Russia is spearheading an international effort to save 80 descendants of the so-called "cocaine hippos" once owned by Colombian drug lord Pablo Escobar, Global Union of Zoological Institutions (GUZI) head Svetlana Akulova has said.

Colombian authorities plan to euthanize the animals, which they see as a growing invasive threat.

Akulova, who is also the director of the Moscow Zoo, described the effort as an "unprecedented international campaign" to save the animals.

Escobar imported four hippos from Africa for his private zoo in the 1980s. After he was killed in 1993, the animals were left behind on his abandoned estate and eventually escaped into the surrounding countryside, where they multiplied unchecked.

The herd has swelled to nearly 200 animals and could explode past 1,000 within a decade, according to local authorities. They say the hippos are tearing up riverbanks, disrupting local ecosystems, and increasingly coming into conflict with nearby communities and fishermen.

Environment Minister Irene Velez has defended the planned cull as necessary to protect Colombia's ecosystems.

Authorities have long argued that relocating the animals was unfeasible, while animal rights activists have fiercely opposed the euthanasia plan. Senator Andrea Padilla called the move "cruel," writing on X that "massacres will never be acceptable."

GUZI said it had appealed to Colombian authorities to halt the euthanasia plan and instead transfer the animals to zoos and sanctuaries accredited by the association.

India's Vantara, one of the world's largest animal rescue and rehabilitation centers, has joined the Russian-led effort and offered to relocate the hippos to a specially designed sanctuary.

"These 80 hippos did not choose where to be born, nor did they create the circumstances they now face," Anant Ambani, Vantara founder said in a statement. "They are living, sentient beings, and if we have the capacity to save them through a safe and humane solution, we have the responsibility to try," he added.

GUZI said it was also working on a "fair distribution" of the animals among accredited institutions to tackle genetic problems caused by the herd's limited gene pool.