Th unusual or aggressive behaviour of rats in America, is being highlighted by The US Centers for Disease Control and Prevention. This comes as a consequence of the two month plus lockdown that has seen these city-dwelling rats being forced to hunt for food, since restaurants and other food vending options were slim.

According to the CDC, last month a number of rats were observed esorting to open warfare, cannibalism and eating their young in the wake of urban shutdowns.

“Community-wide closures have led to a decrease in food available to rodents, especially in dense commercial areas,” the CDC said in recently updated rodent-control guidelines. “Some jurisdictions have reported an increase in rodent activity as rodents search for new sources of food. Environmental health and rodent control programs may see an increase in service requests related to rodents and reports of unusual or aggressive rodent behavior.”

Elevated levels of rat aggression has been observed in New York, where there are increased reports of cannibalism and infanticide, and New Orleans, where rat behavior was caught on CCTV.

Complaints in Chicago have included reports of infestations in housing blocks as rodents seek new sources of food where residents have been sheltering in place. Some rodent experts predicted increased urban rat aggression.

The overall rat-to-human ratio is notoriously hard to gauge. A 1949 determined the ratio was actually 36 humans to one rat in New York. The estimate was increased to one to one in the 1950s , and then dropped again to four humans to one rat.