Most Vets will not recommend spay during season and unless there is a medical reason for doing it now, will recommend waiting till she is at least 3 to 4 weeks past the end of her season. I would also agree you should put it off and wait. Keep in mind however the neutered males can achieve a tie with a bitch in season, however considered "safe sex"… but since you have two males, this could present a problem, so something to keep an eye on
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