An endangered roloway monkey, Masaya, has given birth to infant Lagertha, months after pioneering surgery saved her foot from amputation.
The 15-year-old monkey underwent a complex operation last summer to remove a golf ball-sized mass.
Vets at Chester Zoo, collaborating with University of Liverpool surgeons, adapted techniques for the procedure, as no prior examples existed for roloway monkeys. The intervention saved all but one of Masaya’s toes.
Speaking about the new arrival, Zoe Edwards, primate keeper at Chester Zoo, said: “Masaya is a very experienced mum and she’s parenting magnificently.
“Lagertha is only a few weeks old and is very dinky but already curious about the roloway monkey habitat and inquisitive about us.
“The fact Masaya’s foot has healed so well is a huge relief. If she’d had an amputation, we’d have been left with real questions about whether she could hold her offspring or continue with her normal behaviours.”
Lagertha, named after a Viking queen, is just over four weeks old and about the size of a tennis ball.
The zoo is one of two places in the UK where roloway monkeys can be found and there are only a few breeding females in Europe, Ms Edwards said.
Fewer than 2,000 of the monkeys live in the wild in Ghana and the Ivory Coast, where they face habitat loss and poaching, according to the International Union for Conservation of Nature.
Masaya, now a mother-of-three, had been suffering recurring problems with her foot since she arrived in Chester in 2023 and vets believe the abscess may have been caused by an old thorn injury.
When swelling worsened last year she was taken to the University of Liverpool Small Animal Teaching Hospital for a CT scan.
Charlotte Bentley, veterinary officer at the zoo’s animal health centre, said: “It’s not every day you take a monkey to vet school. We had to bring everything she might need, from anaesthesia equipment to medications and blankets.
“Following the scan, we decided an operation was the way forward. She’s been an absolute trooper all the way through and I’m just glad we were able to do something for her.”
Rachel Burrow, vet and lecturer at the University of Liverpool, added: “Working with primates is completely different from my usual patients, who are typically cats and dogs, and it was a real privilege to care for such a rare animal.
“It’s great to see the surgery was a success – she’s comfortable, active and using the limb well.”
