Science-related
1. 
Where to buy it
2.
Sunny and his Komodo cam, San Diego Zoo, San Diego, California
Why he does this, and full video, at Youtube page (autoplay) -- click on "SHOW MORE"
3.
From Bird and Moon Science and Nature Cartoons
4.
Doctor Fun
How and why real-life monarch butterflies have bad taste
5.
From Life: The Science of Biology, 4th Edition
6.
Article about how it works, including full video (Includes more, and ickier, examples of this phenomenon; you have been warned.)
7.
More about the transformer owl and why he does it
8.
Pygmy seahorse, Nudi Retreat, Lembeh Strait, Indonesia
Photo by Steve Childs
9.
Buff-tip moth
Photo by Sergei Talanov
10.
A white blood cell chasing down and eating a Staphyloccus aureas bacterium among red blood cells; from a 1950s 16mm movie by David Rogers
Source, with more detailed explanation
11. What happens when you run water through a 24hz sine wave.
Explanation and instructions at the Youtube page (autoplay)
12.
Angelo & Jennette Volpe Library & Media Center, TTU, Cookeville, TN, room 243
Photo by Chuck Sutherland
13.
Not mine.
Photo by Paul (palonious at Flickr)
Reddit post which includes further details by Paul (and endless discussion of how it works)
Also relevant: Diving Bell Spider
14.
Source
T-shirt
15.
By PepomintNarwhal at redbubble
T-shirts, posters, throw pillows etc.
16.
Also posted to randompictures, and a selection to splodefromcute
Where to buy it
2.
Sunny and his Komodo cam, San Diego Zoo, San Diego, California
Why he does this, and full video, at Youtube page (autoplay) -- click on "SHOW MORE"
3.
From Bird and Moon Science and Nature Cartoons
4.
Doctor Fun
How and why real-life monarch butterflies have bad taste
5.
From Life: The Science of Biology, 4th Edition
6.
Article about how it works, including full video (Includes more, and ickier, examples of this phenomenon; you have been warned.)
7.
Click to viewMore about the transformer owl and why he does it
8.
Pygmy seahorse, Nudi Retreat, Lembeh Strait, Indonesia
Photo by Steve Childs
9.
Buff-tip moth
Photo by Sergei Talanov
10.
A white blood cell chasing down and eating a Staphyloccus aureas bacterium among red blood cells; from a 1950s 16mm movie by David Rogers
Source, with more detailed explanation
11. What happens when you run water through a 24hz sine wave.
Explanation and instructions at the Youtube page (autoplay)
12.
Angelo & Jennette Volpe Library & Media Center, TTU, Cookeville, TN, room 243
Photo by Chuck Sutherland
13.
Not mine.
Photo by Paul (palonious at Flickr)
Reddit post which includes further details by Paul (and endless discussion of how it works)
Also relevant: Diving Bell Spider
14.
Source
T-shirt
15.
By PepomintNarwhal at redbubble
T-shirts, posters, throw pillows etc.
16.
Also posted to randompictures, and a selection to splodefromcute