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Because bats have small teeth, their bites typically go unnoticed, heightening the risk of infection.

The change hadn't gone unnoticed by her drama teacher.

While the show was well-received by fans for the in-ring action, one thing that didn't go unnoticed was the quantity of adverts throughout the event.

Targeting them for prostate biopsies and MRI scans discovered some aggressive cancers that would otherwise have gone unnoticed.

He had assisted in getting "relevant people unnoticed" in and out of Windsor for private meetings with the prince - and he was invited to his private 60th birthday dinner at his mansion.