When you breed two pokemon its important to know what will the egg hatch into.

For example:

Natu(Female) Attacks: peck,teleport,nightshade
Doduo(male) Attacks: drillpeck,fly,peck,growl

The female pokemon will be the pokemon that hatches from the future egg(unless its ditto, it can be male or female)The male can pass along moves like in this case, the Male Doduo will pass along its drill peck move to the baby natu. The moves that the male has will not always pass to the baby.