Rotten ANYTHING is bad for a hedgehog! Why would you even need to ask?
It would be the bananas are rotten or they have gone rotten.If you want to use the past participle, it's "the bananas have rotted." The simple past tense is "the bananas rotted" (as in, "The bananas rotted before we got a chance to eat them").
yes because it gets rotten so is a chemical change
Yes, it should be perfectly safe, if the bananas are not rotten.
Only if they are rotten, otherwise they can't poison you at all.
They are starting to go rotten
No.
Yes Because the sugar in the banana reacts faster than the acid in an apple.
It's bad for anyone, no matter what species, to eat anything rotten.
My feet can smell pungent. Never eat rotten bananas because they are pungent.
When it is rotten.
bananas and milk (in the form of cottage cheese, etc)?
Yes. They suppose to be yellow, if it's a little Brown you can eat it