An online petition to "save Geronimo", whose fate has agitated the tabloids for several days, had collected more than 81,000 signatures on Friday.
When imported from its native New Zealand four years ago, the black-coated camelid underwent four skin tests that came back negative.
A case brought up to the ears of the Prime Minister
But in the UK, he underwent two blood tests and a skin test which all came back positive, leading authorities to order the animal to be slaughtered.
The case grew to such an extent that it was traced back to Downing Street, which refused to grant Geronimo a stay.
"We know how overwhelming losing animals to bovine tuberculosis is for herders," Prime Minister Boris Johnson's spokesman said on Friday, expressing "sympathy" to the breeder.
But his owner does not budge: "He does not have it, and the sad thing is that they will not notice it until he is dead."
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