The first was the bat.
Then it was the turn of cats, dogs, hamsters and minks, but in reality the list of animals that can become infected with the Sars-Cov-2 coronavirus is growing more and more with the passing of the months: the latest report comes from a zoo in the Sweden where a tiger and two lions contracted the virus, while about ten days ago it was the turn of two gorillas and a snow leopard from two different zoos in the US, in San Diego and Louisville.
The first concerns about the risk of infection in animals had arisen in February 2020, after the occasional contamination of a dog in Hong Kong by a sick woman.
The first infection in a cat was diagnosed in late March in Belgium by the Faculty of Veterinary Medicine of the University of Liège.
Even in that case the infection had started from the man.
Other infections in cats occurred in April in New York, and in the same city in April, four tigers and three lions tested positive in a Bronx zoo in New York, the first case of infected big cats.
In fact, as a recent University College London study found, there are at least 26 animal species potentially susceptible to the SarsCoV2 virus.
In spite of fish, birds and reptiles, the animals most at risk would be mammals, including dogs, cats, lions, tigers and ferrets.
In some animals such as sheep, chimpanzees, gorillas, orangutans and bonobos, the viral Spike protein could bind to the Ace-2 receptor just as strongly as it binds to human cell receptors.
And the facts seem to confirm this.
In addition to minks, which were infected in various farms in the Netherlands and Denmark, the chronicle also reports the cases of four lions from the Barcelona zoo, positive results for coronavirus in December and then of the others reported in the following months in American zoos and the last in Sweden .