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"analyzed the structure of the ACE2 receptor in different animals, and while
ACE2 was found to be widely expressed and the structure highly conserved in the animal kingdom, those of snake, frog,
and fish had only 61%, 60%, and 59% sequence identity, respectively, to that of the human ACE2 receptor ( ).
Such low sequence similarity in these animals suggests that SARS-CoV-2 is unlikely to successfully infect them"
L'articolo scientifico è questo
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7860939/