with insects, reptiles, or amphibians.
Certain animals can leave behind unusual biological material, and egg masses or dried secretions can sometimes look surprisingly different once they’ve dried out. One discussion of a similar mystery suggested possibilities ranging from dried biological material to an animal-related deposit.
That doesn’t mean an animal is the explanation in every case.
If you notice small holes, droppings, shed skin, insect activity, scratching sounds, or repeated appearances, however, it’s worth investigating further.
The real clue may not be the pink color at all—it may be the
