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https://en.wikipedia.org/wiki/Peanut_(squirrel)#Death
In October 2024, Peanut was taken, along with a pet raccoon named Fred,[4] from his owner's home in Pine City, New York by the New York State Department of Environmental Conservation, following anonymous complaints. Government officials alleged that after his seizure, Peanut had bitten one of the personnel involved,[5] and the pets were subsequently euthanized
and the pets were subsequently euthanized which, according to the Centers of Disease Control and Prevention, was necessary to test for rabies.[3][6][7][8] Longo said that they were in the process of filing paperwork to have the squirrel certified as an educational animal when Peanut was seized.[4] He later stated that the decision to kill the squirrel "won't go unheard."[9]
https://en.wikipedia.org/wiki/Peanut_(squirrel)#Death
If a rabies vaccine cures rabies after a bite then you do not need to euthanize just vaccinate it