I made an alphabet out of Twemoji's rat emoji, and then turned it into a font using nanoemoji 🐀🐀🐀
In the font folder, you can download a ttf file which should work in all modern browsers. (Support for color fonts in other applications is spotty.) The other folders contain the source files for the glyphs.
You can see the font in action by following this link.
This project was made using graphics from Twitter's Twemoji project, licensed under CC-BY 4.0: https://creativecommons.org/licenses/by/4.0/
I release the derivative works in this repository under the same CC-BY 4.0 license.