June 1, 1999 · 30 min
This episode focuses on the varied tactics that males use to win females & the chance to mate.
January 13, 1999 · 30 min
This episode looks at how females force males to prove their worth before being accepted as mates.
January 20, 1999 · 30 min
This episode reveals the sexual strategies that are used to ensure that the sperm reaches the egg.
January 27, 1999 · 30 min
This episode looks at the strategies the sexes use to ensure they're not the ones left holding the baby.
February 3, 1999 · 30 min
This episode looks at sex & the role it plays within family groups & the violence & jealousy it causes.
February 5, 1999 · 30 min
Examines the reasons for sex,how some species have abolished it whilst for others it ensures survival.
