1.   Girls generally reach sexual maturity two years earlier than boys.

2.   In older horses the adult lungworms rarely attain sexual maturity.

3.   At sexual maturity, all rice eels are females.

4.   Abilities in many animals decline after sexual maturity.

5.   But once the spiders reach sexual maturity at between three and six months, their death rates diverge markedly.

6.   Chickens reach sexual maturity in just six months.

7.   CropTech, for instance, said its tobacco would be harvested before sexual maturity.

8.   In fact, researchers said Wednesday they had identified a third gene they believe causes obesity after mice reach sexual maturity.

9.   It takes four to five years for a monkey to grow to sexual maturity, Schatten said, and a pregnancy lasts five and a half months.

10.   It then takes six months for the goat or sheep to reach sexual maturity and another five months for that animal to give birth and begin producing milk.