To the point of 'favoritism':
I recall a test whereby one judge in our stake had traveled by van, with dog. In that transitional travel found their bitch was in heat.
Van was parked directly next to the 3rd holding blind back, back open - windows down.
I would doubt there was a bitch check. Didn't need to be. Males are fairly obvious in answering the question for us. Stuff happens, I overlooked it as by holding blind #1 all focus was back. Had the judge then later tried to tie the dog with another on grounds...I'd have a different opinion.
To the point above on common sense, as it applies to rules, like life, things are rarely black and white.
And besides...who wants to slow down a 59 dog senior??