I believe so, yes. Though when I say 'I believe so', I mean I just turned poor Maggie upside down to have a look, and I can't see one.
(See got a sunflower seed for her assistance in scientific investigation, don't worry!)
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Sam, plus Maggie and Cas.
Pawprints on my heart: Frohike, Langly, Byers, Max, Albert and Charlie