Cats have a heat cycle that tends to occur during the time of year when the days are longer, usually associated with warmer weather. The heat cycle is the time when the cat can actually get pregnant. In some cats, this time can be preceded by a couple of days where she acts a little strangely. She may rub against objects, roll around on the floor and be very vocal. If Tabby went through this, it wasn't because she was in pain -- she was just hormonal.

The heat cycle usually lasts 5 to 8 days, but it can range from 3 to 20 days. When they have completed a cycle, there is usually an average of 10 days before they start another heat cycle (the range is 3 to 14 days). Female cats will have a cycle every 12 to 20 days during breeding season. If Tabby has not been spayed, she will go through these cycles during breeding season and experience hormonal changes until she mates.