Here is another: July 25
Recipe for Spreading the Plague
In the fourteenth century fanatical custodians of the Catholic faith declared war on cats in Europe‘s cities.
These diabolical animals, instruments of Satan, were crucified, skewered, skinned alive or chucked into bonfires.
Then the rats, liberated from their worst enemies, came to rule the cities. And the Black Death, transmitted by rats, killed thirty million Europeans.