Dogs do not experience menstrual cramps in the same way humans do during their heat cycle, but they can show signs of discomfort that may be similar to mild cramping. These signs can include behavioral changes such as restlessness, panting, whining, lethargy, or loss of appetite. The physical symptoms of the canine heat cycle include a swollen vulva and vaginal discharge, and while some dogs seem to experience discomfort, it is not clearly the same as human menstrual cramps. Providing a comfortable, calm environment and monitoring the dog’s behavior during the heat cycle is recommended. If a dog appears to be in significant pain, a veterinarian should be consulted.