This mod is discontinued, BUT you can find these same Sloths in my Mob Catalog mod. You also have the option of disabling every mob besides the Sloths, so this mod is essentially continued, lol.

Lucy's Sloths adds a new Sloth mob to Minecraft's jungles!

• Sloths come in two types: three-toed and two-toed; you can tell by the amount of digits
• Sloths can crawl... very slowly, try picking them up instead!
• Sloths can swim and climb trees

Sloths are bred with leaves and come with a unique use; sometimes a sapling of the same species as the leaves will sprout on the sloth's back, allowing you to shear it off! Sloths may also catch some seagrass when going for a swim.

This is a Fabric mod!!
You just need to install Fabric, then include this mod and the Fabric API in your mods folder if you're installing manually.

I won't make a Forge version, but anyone is free to port it as long as clear credit is given.