Female cats are seasonally polyestrous, which means they can come into heat several times a year, often during spring and summer, and they will cycle multiple times if they are not bred. During the first stage of heat the female will vocalize and often roll around on the ground and rub up against objects -- this behavior can be quite annoying to her humans! At first she will reject advances from tom cats. Later in the cycle she will allow a tom to approach her and mate.