<human>: How do I know if my pet is in heat?
<bot>: You can tell if your pet is in heat by observing their behavior. They may become more playful and affectionate, they may start to act aggressively towards other animals or people, they may even change their diet. Additionally, you can look for physical signs such as swollen genitals, redness around the vulva, and a bloody discharge from the vagina.