Guinea pigs, can indeed see in the dark.
Rodents are what kind of animal a guinea pig would be listed as, and we all know that most rodents that we come across on this planet have some sort of night vision at their disposal. This might be a full-blown night vision trait where they can see in even the darkest of places, but it might not be. All we know for sure is that guinea pigs thrive when it comes to darkness, instead of scaring them and inducing fear it’s actually quite calming (it also makes them feel a little bit safer).
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