Aired: 6/1/1999
This episode focuses on the varied tactics that males use to win females & the chance to mate.
Aired: 1/13/1999
This episode looks at how females force males to prove their worth before being accepted as mates.
Aired: 1/20/1999
This episode reveals the sexual strategies that are used to ensure that the sperm reaches the egg.
Aired: 1/27/1999
This episode looks at the strategies the sexes use to ensure they're not the ones left holding the baby.
Aired: 2/3/1999
This episode looks at sex & the role it plays within family groups & the violence & jealousy it causes.
Aired: 2/5/1999
Examines the reasons for sex,how some species have abolished it whilst for others it ensures survival.