A male red squirrel approaches a female during her mating chase. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing ...

Some flying squirrels have only one mating cycle per year but others, such as the Japanese dwarf flying squirrel, have two. The time of year for mating and birth depend on the species as well.

Squirrels have two breeding periods, one in December-February and another in May-June. Males commonly compete to mate with a single female. The gestation period for a grey squirrel is 44 days.