Or, so says the CDC:

A multistate outbreak of HPAI A(H5N1) bird flu in dairy cows was first reported on March 25, 2024. This is the first time that these bird flu viruses had been found in cows. 

The USDA says:

Highly pathogenic avian influenza (HPAI) H5N1 in the hemagglutinin clade 2.3.4.4b," the virus associated with the dairy cow outbreak, was first detected in a Texas dairy cow on March 25, 2024. Since then, there have been 172 confirmed cases of infected dairy milking cows in 13 states.

The CDC states that today's suspicious strain of "Bird Flu" is known to cross the species barrier in poultry, dairy cows, as well as in dairy workers!  That's three different species!

Why lump humans into animal categories, unless the government considers humans part of the herd?

The CDC claims only 13 humans have been "infected." According to the CDC, Bird flu in humans is rare. But, always a source of contradiction, CDC also claims Bird Flu could cause a human pandemic.

The Species Barrier
The species barrier still exists, even if the definition has been scrubbed from the Internet! Read more here. The UK Dictionary once defined it as:

The natural mechanisms that prevent a virus or disease from spreading from one species to another.

The 'species barrier' explains why certain species of animals are not affected by a given infectious agent or parasite. It also describes the phenomenon of natural genetic resistance to pathogens. In general, a pathogen may encounter three successive lines of defense in attempts to infect or parasitize a potential host:

first, the pathogen has to encounter the host animal;

next, the pathogen has to penetrate the body, overcoming mechanisms of nonspecific, natural, constitutional or innate resistance;

the pathogen may also face specific, adaptive or acquired resistance.