Ovis aries

Ovis aries is a member of the goat family in the genus Ovis.

Genus Ovis
Species Ovis aries
Common Name Sheep
Habitat Ovis aries is throughout the majority of the inhabited world, and has been fundamental to many civilizations.
Physical Condition 45-160kg
Food Habits Grasses and shrubs
Average Life Span 10-12 years
Breeding Season Most are seasonal breeders; some are able to breed year-round
Breeding Interval 8 months
Number of Offspring Some regularly throw larger litters of lambs; most produce single or twin lambs.
Gestation period 5 months
Average age at sexual or reproductive maturity (male) 4-6 months
Average age at sexual or reproductive maturity (female) 6-8 months

Cited from: http://en.wikipedia.org/wiki/Sheep