No. For dogs, we always ensure that undesexed males and females stay in separate areas regardless of whether females are on heat or not. All rooms and yards are fully secure and are unable to be broken through. Dogs who participate in Group Activity Time or Group Pool Time Sessions are carefully matched by age, size, breed, sex and temperament, therefore no undesexed dogs have sessions together.
Since all cats are boarded separately, undesexed cats are not an issue for us.