Lil' Moss Rosy
Drops from Mosswool Flower. Counting sheep to a dream of springtime. Critter type. Bugged for me; she did not leave behind a lootable item after interacting with her all possible times, followed faithfully behind her and without getting lost.
Lil' Moss Rosy is a companion pet dropped from the Mosswool Flower treasure on the Isle of Dorn, obtained by guiding a Lost Mosswool sheep through three locations near Rambleshire.
Guide awaiting review
Find Lost Mosswool
Head to the edge of the hillside north of Rambleshire and locate the Lost Mosswool at 59.62, 24.59 on the Isle of Dorn. Click on her to begin guiding her south.
Follow to Second Location
After the first interaction, the Lost Mosswool will run south to 59.1, 27.06. Click on her again and she will continue moving further south toward Rambleshire.
Interact at Third Location
Follow the Lost Mosswool to 59.75, 28.7, near the sheep pen in the middle of town. Click her a third time and she will run to safety in Rambleshire.
Loot the Mosswool Flower
After the Lost Mosswool reaches safety, a lootable treasure called the Mosswool Flower will appear at 59.72, 28.69. Loot it to receive 
Lil' Moss Rosy.
Tips
The Mosswool Flower treasure has a respawn timer of roughly 3 to 5 minutes if another player has already looted it, so wait nearby if it is not visible.
See the video guide for a full walkthrough of the sheep-guiding route.
