1/6 films examining the sexual behaviour of animals. This prog focuses on the varied tactics that males use to win females & the chance to mate.

3/6 films examining the sexual behaviour of animals.This prog reveals the sexual strategies that are used to ensure that the sperm reaches the egg

2/6 films examining the sexual behaviour of animals. This prog looks at how females force males to prove their worth before being accepted as mates.

4/6 films examining the sexual behaviour of animals.This prog looks at the strategies the sexes use to ensure they're not the ones left holding the baby

5/6 films examining the sexual behaviour of animals.This prog looks at sex & the role it plays within family groups & the violence & jealousy it causes

6/6 films examining the sexual behaviour of animals.Examines the reasons for sex,how some species have abolished it whilst for others it ensures survival