If you start anywhere other than New Bark Town? Not at all, as most professors label their poké balls clearly, or the poké balls are up-to-date and thus come with the usual identifying panel that pops up whenever you press the front button.
In New Bark Town, however, which is where you might have been if that was your array of starters, yes, but that’s largely because a certain professor is a bit, shall we say, absentminded.
Terribly sorry for the mix-up, anonymous. There is a chance that if you take the ball back as soon as you can (before the totodile properly bonds with you), you might be able to trade it for a cyndaquil. The professor in question has had this happen frequently enough that, yes, he does keep a few extra on hand; it’s just that your totodile needs to have not bonded with you for the exchange to be made.