* We can hope that Penny was the ''first'' orphan Medusa abducted and sent into mortal peril, but we don't ''know'' it. Likewise, although it's not spelled out, it would have been unwise to let Penny tell anybody what was going on in the Bayou, and fairly simple (what with the easy access to shotguns and crocodiles) for Medusa to see to it that she told no tales.
* Among the swamp critters from the first film is Old Grandpa, a turtle in a Confederate army cap. Given the very long lifespans that turtles can attain, it's possible he ''actually witnessed'' the U.S. Civil War.
* Oliver's troubles with taking off and landing are actually quite true to life--albatrosses don't fly so much as soar, and so HilarityEnsues whenever they have to interact with the ground in any fashion.
* No-one in the Rescue Aid Society thinks of sending Penny's message-in-a-bottle to the police. [[LampShading Lampshaded]] by Penny:
-->'''Penny:''' Didn't you bring someone big with you, like the police?
** Given the reporter's reaction to what Penny said at the end of the movie, it's likely that [[InvisibleToAdults the mice don't interact with adults]].
*** Which doesn't mean that they couldn't send it in as an anonymous tip. An unsigned letter (or if it is, just R.A.S., which could mean anything to someone not in the know) explaining, "Hey, we found this message in a bottle telling us that there's a kidnapped little girl in Devil's Bayou. You should tell the local authorities so that they can help her." with the original letter would likely be enough for the police to take action or at least inform their Louisiana counterparts.
* Considering it's one of Disney's most financially successful and critically acclaimed features, you'd think it would be a good business move to release a soundtrack for the first movie, especially since it had an Oscar-nominated song. Thankfully, the 3 Music/ShelbyFlint tracks are included with the newer edition of the ''Down Under'' soundtrack.
** They've released at least a partial soundtrack before. I grew up with a cassette tape of songs from the Rescuers.
** I don't know about a cassette, but I've seen LP copies of what amounts to a book on tape (both on Amazon and once even in the flesh (unfortunately, it was already in somebody's hand...oh well.)