# What is blue and lives in a Mouse? **URL:** \ **Category:** Factual Questions\ **Created:** [October 9, 2013, 11:53pm UTC](https://boards.straightdope.com/t/what-is-blue-and-lives-in-a-mouse/670830 "2013-10-09T23:53:55Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Richard\_Pearse](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/richard_pearse/32/13144_2.png) [@Richard\_Pearse](https://boards.straightdope.com/u/Richard_Pearse)\ **Post date:** [October 9, 2013, 11:53pm UTC](https://boards.straightdope.com/t/what-is-blue-and-lives-in-a-mouse/670830/1 "2013-10-09T23:53:55Z")
My cat just ate a mouse (that he caught all by himself - yay!) He left a bit behind though. A bright turquoise spherical sack, a bit bigger than a pea. Any idea what that might be? ---
**Author:** ![kayaker](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/kayaker/32/441_2.png) [@kayaker](https://boards.straightdope.com/u/kayaker)\ **Post date:** [October 10, 2013, 12:15am UTC](https://boards.straightdope.com/t/what-is-blue-and-lives-in-a-mouse/670830/2 "2013-10-10T00:15:35Z")
Gallbladder is colorful but more of a dark green… ETA, and bigger than a pea would be too large for a gallbladder… ---
**Author:** ![cmyk](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/cmyk/32/3353_2.png) [@cmyk](https://boards.straightdope.com/u/cmyk)\ **Post date:** [October 10, 2013, 12:23am UTC](https://boards.straightdope.com/t/what-is-blue-and-lives-in-a-mouse/670830/3 "2013-10-10T00:23:01Z")
I don’t know, but it makes eating pizza about 14 thousand times less appetizing. Thank you. ---
**Author:** ![Chronos](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/chronos/32/134_2.png) [@Chronos](https://boards.straightdope.com/u/Chronos)\ **Post date:** [October 10, 2013, 12:23am UTC](https://boards.straightdope.com/t/what-is-blue-and-lives-in-a-mouse/670830/4 "2013-10-10T00:23:31Z")
“Bigger than a pea” would be huge, for any mouse part. Are you sure it wasn’t a rat? All I know, though, is don’t eat the green wobbly bit. ---
**Author:** ![Lukeinva](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/lukeinva/32/17872_2.png) [@Lukeinva](https://boards.straightdope.com/u/Lukeinva)\ **Post date:** [October 10, 2013, 12:23am UTC](https://boards.straightdope.com/t/what-is-blue-and-lives-in-a-mouse/670830/5 "2013-10-10T00:23:33Z")
My neighbor’s cat did that and left the fur, too. The mouse was skinned and deboned with the skill of a French chef. ---
**Author:** ![running\_coach](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/running_coach/32/15836_2.png) [@running\_coach](https://boards.straightdope.com/u/running_coach)\ **Post date:** [October 10, 2013, 12:25am UTC](https://boards.straightdope.com/t/what-is-blue-and-lives-in-a-mouse/670830/6 "2013-10-10T00:25:04Z")
> [@Lukeinva](#): > > My neighbor’s cat did that and left the fur, too. The mouse was skinned and deboned with the skill of a French chef. I didn’t know there was a French dish that used mice. ---
**Author:** ![Leaffan](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/leaffan/32/299_2.png) [@Leaffan](https://boards.straightdope.com/u/Leaffan)\ **Post date:** [October 10, 2013, 12:32am UTC](https://boards.straightdope.com/t/what-is-blue-and-lives-in-a-mouse/670830/7 "2013-10-10T00:32:07Z")
Souris flambé au jus. ---
**Author:** ![Ludovic](https://avatars.discourse-cdn.com/v4/letter/l/7ab992/32.png) [@Ludovic](https://boards.straightdope.com/u/Ludovic)\ **Post date:** [October 10, 2013, 12:32am UTC](https://boards.straightdope.com/t/what-is-blue-and-lives-in-a-mouse/670830/8 "2013-10-10T00:32:23Z")
You never heard of Rat-tat-tailly? (Thanks, you can’t do that on television). ---
**Author:** ![beowulff](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/beowulff/32/542_2.png) [@beowulff](https://boards.straightdope.com/u/beowulff)\ **Post date:** [October 10, 2013, 12:32am UTC](https://boards.straightdope.com/t/what-is-blue-and-lives-in-a-mouse/670830/9 "2013-10-10T00:32:42Z")
> [@runner pat](#): > > I didn’t know there was a French dish that used mice. An amuse-bouche of Ratatouille? ---
**Author:** ![kayT](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/kayt/32/3633_2.png) [@kayT](https://boards.straightdope.com/u/kayT)\ **Post date:** [October 10, 2013, 12:37am UTC](https://boards.straightdope.com/t/what-is-blue-and-lives-in-a-mouse/670830/10 "2013-10-10T00:37:56Z")
Could it be a fetus? Sometimes membranes are somewhat iridescent. ---
**Author:** ![WhyNot](https://avatars.discourse-cdn.com/v4/letter/w/c77e96/32.png) [@WhyNot](https://boards.straightdope.com/u/WhyNot)\ **Post date:** [October 10, 2013, 12:56am UTC](https://boards.straightdope.com/t/what-is-blue-and-lives-in-a-mouse/670830/11 "2013-10-10T00:56:11Z")
Mouse guts are surprisingly colorful. My guess is a bit of the large intestine, which can be whitish yellowish or brownishgreen or bluegreenish or downright green. I’m not sure what causes the different colors. [Anything look familiar](http://blogsurlamedecine.blogspot.com/2012/03/my-dad-knows-that-im-interested-in.html)? [More mouse guts here.](http://plato.wilmington.edu/faculty/dtroike/mouse_anatomy.htm) [This one looks like he was hungry before he was cut](http://tengweiloon.blogspot.com/2010/11/mouse-dissection.html). ☹ ---
**Author:** ![cmkeller](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/cmkeller/32/118_2.png) [@cmkeller](https://boards.straightdope.com/u/cmkeller)\ **Post date:** [October 10, 2013, 12:58am UTC](https://boards.straightdope.com/t/what-is-blue-and-lives-in-a-mouse/670830/12 "2013-10-10T00:58:31Z")
Do you have rodent-poison packets around the house? They usually contain turquoise-colored pellets. Maybe the mouse ate a few, and they turned into a spherical blob in its stomach. ---
**Author:** ![Musicat](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/musicat/32/20189_2.png) [@Musicat](https://boards.straightdope.com/u/Musicat)\ **Post date:** [October 10, 2013, 1:04am UTC](https://boards.straightdope.com/t/what-is-blue-and-lives-in-a-mouse/670830/13 "2013-10-10T01:04:31Z")
You’re lucky. Our cats used to catch at least one mouse per night when we vacationed in the north woods in the summer, but since they were well fed, they weren’t really hungry. Almost every morning we’d find a headless mouse at the front door. We could only assume the head was the tastiest part. ---
**Author:** ![Colibri](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/colibri/32/1841_2.png) [@Colibri](https://boards.straightdope.com/u/Colibri)\ **Post date:** [October 10, 2013, 1:11am UTC](https://boards.straightdope.com/t/what-is-blue-and-lives-in-a-mouse/670830/14 "2013-10-10T01:11:51Z")
Mice don’t normally have any turquoise blue organs. I would guess it was something it ate. ---
**Author:** ![Lukeinva](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/lukeinva/32/17872_2.png) [@Lukeinva](https://boards.straightdope.com/u/Lukeinva)\ **Post date:** [October 10, 2013, 1:42am UTC](https://boards.straightdope.com/t/what-is-blue-and-lives-in-a-mouse/670830/15 "2013-10-10T01:42:37Z")
> [@Colibri](#): > > Mice don’t normally have any turquoise blue organs. I would guess it was something it ate. Really. Is there anything normal on these boards? ---
**Author:** ![AaronX](https://avatars.discourse-cdn.com/v4/letter/a/7bcc69/32.png) [@AaronX](https://boards.straightdope.com/u/AaronX)\ **Post date:** [October 10, 2013, 2:52am UTC](https://boards.straightdope.com/t/what-is-blue-and-lives-in-a-mouse/670830/16 "2013-10-10T02:52:42Z")
> [@Colibri](#): > > I would guess it was something it ate. That’s what I was thinking too. Does it have any attachment points? At both ends or one? ---
**Author:** ![Washoe](https://avatars.discourse-cdn.com/v4/letter/w/ecae2f/32.png) [@Washoe](https://boards.straightdope.com/u/Washoe)\ **Post date:** [October 10, 2013, 2:56am UTC](https://boards.straightdope.com/t/what-is-blue-and-lives-in-a-mouse/670830/17 "2013-10-10T02:56:37Z")
> [@cmyk](#): > > I don’t know, but it makes eating pizza about 14 thousand times less appetizing. > > Thank you. You gonna eat that last slice? ---
**Author:** ![Richard\_Pearse](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/richard_pearse/32/13144_2.png) [@Richard\_Pearse](https://boards.straightdope.com/u/Richard_Pearse)\ **Post date:** [October 10, 2013, 3:28am UTC](https://boards.straightdope.com/t/what-is-blue-and-lives-in-a-mouse/670830/18 "2013-10-10T03:28:42Z")
> [@cmkeller](#): > > Do you have rodent-poison packets around the house? They usually contain turquoise-colored pellets. Maybe the mouse ate a few, and they turned into a spherical blob in its stomach. It was an outdoor mouse so no idea what it had been eating. ---
**Author:** ![SeaDragonTattoo](https://avatars.discourse-cdn.com/v4/letter/s/df705f/32.png) [@SeaDragonTattoo](https://boards.straightdope.com/u/SeaDragonTattoo)\ **Post date:** [October 10, 2013, 3:52am UTC](https://boards.straightdope.com/t/what-is-blue-and-lives-in-a-mouse/670830/19 "2013-10-10T03:52:03Z")
[Was it similar to this color?](http://media.qcsupply.com/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/2/3/230129.jpg) It’s a popular mouse/rat bait, there’s a green that’s also popular in a comparable saturation (kind of turquoise green). Your kitty might have been able to catch the mouse because it was already sick. The more common anticoagulant poisons out there, whatever’s inside a mouse, isn’t enough to hurt your kitty. ---
**Author:** ![Siam\_Sam](https://avatars.discourse-cdn.com/v4/letter/s/d78d45/32.png) [@Siam\_Sam](https://boards.straightdope.com/u/Siam_Sam)\ **Post date:** [October 10, 2013, 3:53am UTC](https://boards.straightdope.com/t/what-is-blue-and-lives-in-a-mouse/670830/20 "2013-10-10T03:53:41Z")
Smurf remains? [Next page](https://boards.straightdope.com/t/what-is-blue-and-lives-in-a-mouse/670830.md?page=2)