The roe deer

The forest is home to roe deer, which can often be seen. This ungulate (hoofed mammal) is rather unusual because the rut does not take place in autumn, for births in May and June as is the case with other mountain-dwelling ungulates, but in summer. After fertilisation, however, egg development is suspended for 6 months (this is called embryonic diapause). Gestation then resumes so that the fawn (or twin fawns) can be born in spring, a period more favourable for its survival.