Episode 1

This episode focuses on the varied tactics that males use to win females & the chance to mate.

Episode 2

This episode looks at how females force males to prove their worth before being accepted as mates.

Episode 3

This episode reveals the sexual strategies that are used to ensure that the sperm reaches the egg.

Episode 4

This episode looks at the strategies the sexes use to ensure they're not the ones left holding the baby.

Episode 5

This episode looks at sex & the role it plays within family groups & the violence & jealousy it causes.

Episode 6

Examines the reasons for sex,how some species have abolished it whilst for others it ensures survival.