The ferret-like animals displayed respiratory symptoms, according to the Dutch Agricultural Ministry.
The photos released by a website specializing in North Korea studies don’t say anything about the potential health problems of the country's leader.
Johnson, who earlier this month spent three nights in intensive care after contracting the coronavirus, plans to head back to work on Monday.
A Seoul-based website reported earlier this week that Kim was recovering after undergoing a cardiovascular procedure on April 12.
The Lyrids meteor shower and more scenes of life during the coronavirus pandemic round out this week's best images.
The Duke and Duchess of Sussex listened in on the preliminary hearing in Britain's High Court and are said to be encouraged by the process so far.
"At this time of need ... Ramadan brings hope for people."
On the eve on Anzac Day, Henry Lunney reflects on surviving the Great Depression, World War II and the deadly coronavirus.
Singapore's coronavirus escalation lays bare the "parallel universe" of poor conditions endured by migrant workers who are essential to the affluent city-state.
The lockdown can't last forever, but easing it will almost certainly lead to more cases.