>>19944813 pb
>no animals in nature vaccinate themselves
here ya go, ya fathead ignoramous…
you demanded sauce
because yer obviously TOO lazy, TOO stubborn, or TOO stupid to know how to search
and likely TOO fucked in the head to admit when yer wrong
https://resjournals.onlinelibrary.wiley.com/doi/abs/10.1111/een.13031
this is ONE example i found in less than 30 seconds
it only takes ONE counterexample to prove YOUR hypothesis FALSE
but as is said, there are MANY SUCH EXAMPLES
so SUCK IT, asshat fucktard