*All hosts detected for each coronavirus are shown. A reservoir host is a species in which the pathogen endemically circulates and is considered to have coevolved with. An intermediate host is a species that harbors a recent common ancestor of the coronavirus or played a role in the natural selection/adaptation of the virus before its spillover. A spillover host is a nonendemically infected species in which >1 animals are considered to have acquired the virus through natural infection (e.g., exposure an infected conspecific or interspecies transmission). A susceptible host is a species in which >1 animals can become infected with the virus through experimental challenges or otherwise laboratory controlled infection studies. In vitro studies or studies using transgenic animal models to induce susceptibility are not included. A nonsusceptible host is a species in which experimental challenge or otherwise laboratory controlled infection studies have occurred that did not result in viral infection. For all categories, infection is considered detection of viral RNA from host samples or the host mounting a detectable antibody response. Therefore, infection as it is used here does not necessarily imply hosts naturally or experimentally infected with a virus are capable of transmitting the infection to others.