Polar bear, seal and musk oxen all supplement the local diet – although not hares, according to tourism director Mette Pike Barselajsen, which are kept as pets.

In a warming landscape, pregnant female musk oxen may struggle to find enough food for their unborn calves, the researchers found.

Common enrichment activities include things like giving the animals tasks or toys, like letting apes wash the windows of their enclosure, or providing polar bears with pool rafts.