Don't worry, surely there are some virologists in some lab mapping right now exactly what mutations would make it very transmissible between mammals. So that we are ready and prepared, of course.

Up until a few months ago, it wasn't transmissible between mammals at all: https://en.wikipedia.org/wiki/Influenza_A_virus_subtype_H5N1... https://en.wikipedia.org/wiki/List_of_mammals_that_can_get_H...