1.   Conservationists are concerned that fish of breeding age -- those over eight years -- are the most severely depleted.

2.   All hope Tian Tian and Mei Xiang will mate when they reach breeding age, as early as next spring.

3.   Now as a safeguard, all of the chimps have been placed on birth control, even though the males of breeding age have undergone vasectomies.

4.   Once they have passed the breeding age, these large silversides are released into either the Shetucket or the Naugatuck.

5.   The National Zoo in Washington is scheduled to get a couple in prime breeding age, perhaps as early as this month.

6.   The male was not of breeding age, and what is at best a once-a-year breeding opportunity for a critically endangered species was wasted.

7.   Yaku, who is nearing breeding age, will become the only male in Chicago.

8.   But hopes are high to meet that demand because his gators are just coming into breeding age.

9.   The two male and two female tigers, all of breeding age, were born in captivity in Mexico, where the Argentine zoo obtained them.

10.   There are currently eight females of breeding age at the zoo, all of which are capable of giving birth up to three times a year, he said.