From hippos to hamsters: how Covid is affecting creatures great and small

Scientists are racing to assess the spread of the virus in wild and domestic animals, and the threat it could pose to us

A year ago humanity embarked on a project to vaccinate every person against Covid-19. But in recent months a shadow vaccination campaign has also been taking place. From giraffes to snow leopards, gorillas to sea lions, zoos around the world have been inoculating their animals with an experimental Covid vaccine as an insurance policy against what they fear could be a similarly fatal illness for certain mammals.

Meanwhile, veterinary scientists have been scrambling to understand the scale of Covid-19 infection in our furry household companions, and what the consequences could be for their health - and our own.