Identify What is this animation from? [SOLVED]

[Shirokamisama]

My friend sent me a gif (Don't know why, and from where he found it, and I don't dare to ask).
But it features an animation, that piqued my curiousity, and I tried searching for it, but to no avail. Does anyone know this:

You must be registered to see the links

Let me know, if you have troubles downloading/playing the file
(And obviously I'm not interested about the Avenger part. xd )
Thank you in advance!

 

[Nocdub]

File deleted.

 

[TheBlueKnight]

Spoiler: It was a tiny guy getting smashed by a horses butt.

You don't have permission to view the spoiler content. Log in or register now.

 

[Shirokamisama]

Spoiler: It was a tiny guy getting smashed by a horses butt.

You don't have permission to view the spoiler content. Log in or register now.

Horses's?
How do you know they are horses'? (Not tryin' to insult, it's a genuine question!)
And I captured around this much, and tried search by that, but I probably suck at searching, so a source would be appreciated.

And thank you for helping! ^^ <3
EDIT:
OH!!!! I FOUND IT!
Thanks to you m8!
I tried searching with horses, and found it on Rule34. The artist is "hahafunny65"
Thank you very much for the help!


(Should I and Can I flag this post as resolved?)

 

[Shirokamisama]

File deleted.

Oh sorry, I don't know why... according to the site, might have been because some ppl (or 1) already downloaded it.
...
Now I get why @TheBluKnight posted that pic. xD
Thanks for trying to help regardless! ^^ And as you can see I already found it!

 

[TheBlueKnight]

Should I and Can I flag this post as resolved?

Just add (solved) or something similar to the title.

 

[Shirokamisama]

Just add (solved) or something similar to the title.

Thanks again! ^^ <3