How do koalas win the female koala?

koalas make a grunting sound that atracts the oppisit sex

yes there is

Female koalas are smaller than the male, and they have a pouch. Mature males can have a brownish stain on their chest, the result of their scent gland.

Neither."Laziness" is a human characteristic, and not one that should be applied to animals.Koalas have a slow metabolic rate which is required for them to digest the eucalyptus leaves on which they...

There is no official name for a female koala. However, the male may sometimes be referred to as a "buck" and the female as a "doe".