Short-beaked common dolphin
Female short-beaked common dolphins are pregnant for around 10 to 11 months before giving birth to young which are 70 to 100 cm (2.3 to 3.3 ft) long, and weigh about 10 kg (22 Ib). Males mature at the age of between 3 and 12 years old, and females mature at the age of between 2 and 7 years old.  They live for around 35 years, but some live for only 22 years.