This image depicts member of a Mexican cattle herd that exhibited white, crusty exudate on its neck, emanating from a number of sites where vampire bats had fed on the steer’s blood. The taxonomic identity of the bats was not available.
“Rabid bats have been documented in all 49 continental states. Hawaii is rabies-free. Bats are increasingly implicated as important wildlife reservoirs for variants of rabies virus transmitted to humans.”
For more on bats as a vector for the rabies virus, see the link below.