The 13-week-old cubs, born in May marking the first cubs of its species to be born at the Hampshire zoo since 2013, are a “global conservation success story”, according to the charity.
Snow leopards are a vulnerable species with about 3,000 left in the wild.
Ashleigh Ball, senior carnivore keeper at Marwell, said: “The cubs, who were born in May, have had a second round of vaccinations to protect them from diseases and a 13-week general health checkup which they passed with flying colours.
“The cubs and Zaya have had a natural, quiet space to bond as a family since they were born, with access to their outdoor habitat whenever they choose.
“It’s important that the family have been able to explore at their own pace.”
Named Momo (Tibetan for ‘dumpling’) and Nima (‘sun’), the cubs are the offspring of four-year-old Warjun and three-year-old Zaya.
One of the snow leopard cubs being checked over at Marwell Zoo (Image: Marwell Zoo)
Warjun and Zaya were paired last year through the European conservation breeding programme.
Their arrival is Marwell Zoo’s first snow leopard birth since 2013.
Snow leopards survive in small, scattered populations across the mountains of Central and South Asia.
Roads, development, farming and climate change are putting those habitats under growing pressure.
Marwell Zoo works with partners in Bhutan, China, and Kazakhstan to support snow leopard conservation in the wild.
The cubs are growing more confident and adventurous, giving visitors a better chance of spotting them.
Other recent arrivals include baby white rhino Amali, twin cotton-headed tamarins, a coppery titi monkey and a baby potoroo.
The cubs are Zaya’s first litter, after she joined Marwell Zoo in March 2025.
Marwell previously launched a £20,000 appeal towards a more than £150,000 project to double the size of the snow leopard enclosure and support breeding.