Which stage occurs just prior to the heat cycle in a non-pregnant animal?

Prepare for the NAVTA Approved Veterinary Assistant Test with study flashcards and multiple choice questions, each with hints and detailed explanations to help you ace the exam!

Proestrus is the stage that occurs just prior to the heat cycle, or estrus, in a non-pregnant animal. During proestrus, the body is preparing for potential mating. This stage is characterized by physical changes, including swelling of the vulva and an increase in vaginal secretions, as the body prepares for the mating period. Hormonal changes, particularly the rise in estrogen levels, are also significant during this phase as they set the stage for ovulation and the subsequent estrus phase.

Understanding proestrus is crucial because it lays the foundation for the behaviors and physiological changes that will be observed during estrus, where the animal is receptive to mating. Recognizing the signs of proestrus can help owners and caregivers in managing breeding programs and understanding their animal's reproductive cycle.

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