What to do with Halloween pumpkins after the holiday?

For years, my kids had a blast burning our Halloween pumpkins about a week after the holiday.  Now they're grown and gone we rarely even carve a pumpkin, so this topic is not very relevant to us right now.  

Nevertheless, I can't help myself...I have to wonder what we should -or should not do- with post-holiday pumpkins that would benefit animals, either domestic or wild. 

For the "do not do" category, I've been seeing posts on Facebook admonishing everyone not to use bleach or other chemicals to make them last longer.  This is not a good idea for any pumpkin, anywhere as it will eventually be eaten -at least partly by an animal of some sort somewhere. Whether birds, bugs, mice, or raccoons something will be feasting on it, and if it's toxic it might begin a chain reaction that could cause misery and death far beyond the new year. Soaking your pumpkin in a solution of vinegar and water will kill mold spores so it will last quite a while longer, without causing any harm to pets or wildlife.  They will be safe to add to compost, feed worms, or donate to a local zoo.

Does anyone else have any ideas for them?