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Mystery Photo

5-23-17 blue scat by Adam Riquier IMG_3657 (002)Normally I am well acquainted with the natural history of any Mystery Photo I post, but today is an exception.  I have no idea whose scat this is, nor the origin of its color.  A forester, Adam Riquier, discovered it in Lake Placid, NY. He writes that “The forest type is hardwoods (maple beech, birch with some red spruce) right at an edge where it transitions to a cedar forest. It was taken three or four days ago, so there are no berries out yet. There is some blue stain fungus on downed hardwood nearby. The scat is roughly golf ball sized.”

In hopes that a Naturally Curious reader might be familiar with this oddity, I secured Adam’s permission to post his photograph.  If you think you know whose scat it is, and/or the origin of its color, please share your expertise with us!  (The scat was found at least a mile from any houses, not eliminating the possibility of (blue) rat poison having been ingested, but making it fairly unlikely.)

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48 responses

  1. Pam Schoch

    Unicorn poop

    May 23, 2017 at 6:37 am

  2. Linda Freedman

    Definitely unicorn poop !

    May 23, 2017 at 6:41 am

  3. Karen P Maxon

    Perfect! I too vote unicorn 😉

    May 23, 2017 at 6:42 am

  4. Sue Wetmore

    Results of drinking a blue slurpee!

    May 23, 2017 at 6:47 am

  5. peg willey

    was it possible that the critter was close enough to someone’s home to be eating blue sidewalk chalk?

    May 23, 2017 at 6:55 am

  6. Rob Anderegg

    Looks bird-ish. Wild turkey? Goose? Does the blue color go all the way through, or is it just on the surface?

    May 23, 2017 at 6:56 am

  7. Clyde

    Smurf camping in the woods?

    May 23, 2017 at 7:10 am

  8. Treah Pichette

    Definitely a chemical blue color I’d say! Looks like dog poop to me.

    May 23, 2017 at 7:12 am

  9. Suzanne Weinberg

    I doubt it’s dog or unicorn feces if on a log and golf-ball sized. The color reminds me of 1) new Brillo pads and 2) the residue on a tub from acidic water going through copper pipes. Very weird. And where the heck does the similarly colored fungus fit in?

    May 23, 2017 at 7:16 am

  10. David Thomas-Train

    Blue-pooted booby

    May 23, 2017 at 7:25 am

  11. I’m gonna guess dog poop–seems small (rat) terrier size. (Owner careless about using poison around the house and also careless about cleaning up after their dog. Was it near a trail?)

    May 23, 2017 at 7:31 am

  12. phil

    got into a box of miracle gro

    May 23, 2017 at 7:52 am

  13. Looks as though it has been there a while and may have been coated with blue fungus, perhaps? Checking inside may tell one more.

    May 23, 2017 at 7:53 am

  14. obviously extraterrestrial avatar

    May 23, 2017 at 7:53 am

  15. Dee Denehy

    Could ingesting cedar cause this color?

    May 23, 2017 at 8:24 am

  16. Wallie

    I like the miracle gro idea-but knowing how long it sat there would help as it looks moldy and mold can come in many colors

    May 23, 2017 at 8:37 am

  17. G. deFriesse

    It may be that this creature ingested rat poison, unfortunately.

    May 23, 2017 at 8:52 am

  18. Robyn Deveney

    “Blue poop… I saw you standing alone…”

    May 23, 2017 at 9:05 am

  19. When in doubt, post something ridiculously funny!! 🙂

    May 23, 2017 at 9:23 am

  20. Raccoon found stash of leftover Easter Peeps

    May 23, 2017 at 9:28 am

  21. Elizabeth Kilmarx

    The forester is pulling our legs. He was out marking trees with blue spray paint and sprayed this poop pile.

    May 23, 2017 at 9:47 am

    • Marie

      that’s what I thought

      May 23, 2017 at 11:34 am

  22. Fisher scat, probably after indulging a psychedelic mushroom.

    May 23, 2017 at 9:52 am

  23. Fox sign with blue fungus on surface. I bet the blue is only on the surface.

    May 23, 2017 at 10:16 am

  24. Kathryn Connell

    Play dough! Obviously!

    May 23, 2017 at 10:18 am

  25. Cindy

    I agree with John. It does look like fungus growing on some older mammal scat. Much like the parasitic Hypomyces lactifluorum mold grows on other mushrooms and turns them orange.

    Perhaps whatever the animal was eating was “internally composted” to the perfect moisture and level of decomposition. Then the wind was blowing in the right direction and at the exact right spore producing time. Close enough to the blue staining wood seen nearby. Then probably a long dry spell to not wash off the spores or breakdown the scat. And everything was accelerated to produce this prolifically molded, seldom seen, interesting blue scat. Just a guess though. Could be your friend w/blue paint. 🙂

    May 23, 2017 at 10:48 am

    • And sweetpotato7.

      May 23, 2017 at 10:51 am

  26. Joel snider

    It’s such an unnatural color. might the critter have eaten a paintball?

    May 23, 2017 at 10:59 am

  27. Midge

    sure is the color of Decon granules ….

    May 23, 2017 at 11:05 am

  28. Thea Lahti

    Wonderful replies! I vote for unicorn poop, with 2nd place for blue pooping booby.

    May 23, 2017 at 11:08 am

  29. Alyson

    Looks like the color of cedar berries to me. A fox that ate a bunch of last year’s berries?

    May 23, 2017 at 11:53 am



    May 23, 2017 at 1:42 pm

  31. Bobbie Rausch

    My dog once got into hydroseeding and created a greenish blue poop. It was bizarre!
    Perhaps this animal also consumed hydroseed? Was anything like that sprayed nearby?

    May 23, 2017 at 2:13 pm

  32. Alice Pratt

    Ha, ha, David… first thought….a Blue-Footed Booby….but why did it leave the Galapogos Islands…then I thought something OD-ed on copper & that is corroded poop….does it have to be scat? It could also be a hairball from a 🤔 ….. Hmmmmmmm?? Mary must be chuckling! 😹

    May 23, 2017 at 3:47 pm

  33. Barb Cunningham

    Something ate blue cotton candy!

    May 23, 2017 at 3:58 pm

  34. Carol Evans

    Mary, We’ve seen golf balls in the woods with the outer layer chewed off, some think by foxes. The inner layer is about that color. Weird….

    Carol Evans, Topsham Maine

    May 23, 2017 at 4:23 pm

  35. Some critter ate a chunk out of the blue salt lick?

    May 23, 2017 at 8:09 pm

  36. Aaron Jenkyn

    If you look carefully at the photo it appears that the wood under the scat, as well as some of the needles scattered throughout the picture are tinted a similar color blue, might this suggest a fungus and not something ingested by the animal? Is it possible that it is Blue Stain Fungus (Chlorociboria aeruginascens)?

    May 23, 2017 at 9:13 pm

    • Aaron Jenkyn

      My second guess is that something ate too much red cabbage.

      May 23, 2017 at 9:24 pm

      • Alice Pratt

        My daughter told me that’s what happens when their chickens eat red cabbage!

        May 24, 2017 at 3:15 pm

  37. Jean Harrison

    The color is most unnatural. And I haven’t seen a neatly coiled scat like that. Did the animal have to circle its butt while defecating to make it coil like a snake?

    May 23, 2017 at 11:04 pm

    • phil

      back a few years, well quite a few years there was fake rubber poop that was very symmetrical, is it possible?

      May 24, 2017 at 4:57 pm

  38. Alice Pratt

    A “Turquoise-Turd-Laying-Turkey?” A Forensic Pathologist might be able to help.

    May 24, 2017 at 7:36 am

  39. Margaret B Towle

    I vote for play-dough.

    May 24, 2017 at 8:03 am

  40. dp

    Something was hunting an indigo bunting.

    May 24, 2017 at 9:46 am

  41. Was it anywhere near water? The goose poop that floats in our lake is sometimes a bright blue-green – not quite this blue!

    May 24, 2017 at 10:01 am

  42. Karen P Maxon

    Hilarious! I love Jean’s butt-circling image. I suggest Faeries, maybe hovering to create the delicate spiraling….

    May 24, 2017 at 10:21 am

  43. Suzanne Weinberg

    Aaron’s suggestion looks good to me after looking at these images. Is it found in Vermont?

    May 24, 2017 at 10:43 am

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