The offspring will always be the same gender as the female, meaning that totodile with another Pokemon in its egg group won't produce another Totodile. Luckily though there is a way around this - breeding anything with a Ditto gives that 'anything' as the offspring, so breed a Totodile with a Ditto to get more Totodiles. (You can catch Ditto on route 34 - same as the day care).
Ask questions in the help thread next time, please. Closed.
BAH beaten oh well have my wordy answer as well anyways. =P