Born on February 9 to first-time parents Bonita and Manu, the rare pups are the first giant otters to be born at the zoo in seven years, marking a significant success for an international conservation breeding programme.
Rachael Boatwright, assistant team manager of carnivores at Chester Zoo, said: “The arrival of these three giant otter pups is a hugely special moment and marks the first time the species has been born here in seven years.
“The pups recently had their very first health check-up at eight weeks old, where they were weighed and had their heart, teeth and overall condition assessed by the zoo’s vets.
“We’re delighted to confirm that all three are healthy and thriving – and that we have two males and one female pup.”
The pups have remained tucked away in their holt since birth, cared for by their mother until they more than tripled in size.
At eight weeks old, they are now beginning to emerge with their parents, who will gradually introduce them to swimming and other essential survival skills.
Giant otters are the largest species of otter in the world.
Known in Spanish as obo de río, or “river wolf,” they are apex predators vital to the health of freshwater ecosystems in South America.
However, fewer than 5,000 individuals are estimated to remain in the wild, with the species already extinct in parts of its historical range.
Their decline is attributed to deforestation, water pollution, and illegal hunting.
The giant otter pups getting their first health check up (Image: Chester Zoo)
The giant otter is classified as endangered by the International Union for the Conservation of Nature (IUCN), meaning it faces a very high risk of extinction without urgent intervention.
Kirsten Pullen, chief conservation officer at Chester Zoo, said: “Every birth represents genuine hope for this highly endangered species, and these three giant otter pups are an important reminder of what conservation efforts around the world can achieve.
“Wild giant otter populations are facing enormous pressure from widespread habitat loss and pollution in their freshwater ecosystems, so the international conservation breeding programme has become a vital safety net for the species.
“By maintaining healthy, genetically diverse populations in conservation zoos like ours, while also supporting efforts to protect and restore habitats in the wild, we’re hopeful that giant otters can thrive long into the future.”
Parents Manu and Bonita arrived at Chester from European zoos as part of the endangered species breeding programme.
The pair was carefully matched based on genetic compatibility to help secure the future of the species.
Fully grown giant otters can reach over 1.5 metres in length (Image: Chester Zoo)
The pups live in a specially designed habitat with multiple water pools.
Giant otters primarily eat fish, but in the wild, they also prey on snakes, river crabs, and even smaller caimans, which are members of the alligator family.
Fully grown, they can exceed one and a half metres in length.
Chester Zoo has described this birth as a “rare boost” for the species and a testament to the value of coordinated conservation action.