Table 1.

Demographic data of the healthy gibbons at the Krabok Koo Wildlife Breeding Center, Cha-Cheng-Sao province, Thailand.

Species	No.	Sex (Male/Female)	Age a) (n) (X +SD) (range)
Hylobates pileatus	19	9/10	15
			12.4 ± 3.52
Hylobates lar	58	32/26	30
			11.53 ± 4.01
			5–21
Hylobates agilis	1	1/0	5

a) only known age