insects undergo a period of dormancy in winter or summer called
Dormancy Diapause is a predictive strategy that is predetermined by an animal's genotype. Diapause is common in insects, allowing them to suspend development between autumn and spring, and in mammals such as the roe deer (Capreolus capreolus, the only ungulate with embryonic diapause[citation needed]), where a delay in attachment of the embryo to the uterine lining ensures that offspring are born in spring, when conditions are most favorable.