This is the pattern I usually use to make bunnies and animals in general (I have made bunnies, this lamb, a kitty, bears, pandas and lions), you just have to change the shape of the ears and their possition.
This pattern is based on Ana Paula’s “Amigurumi bear and pot of honey”. I made its head smaller and all the different ears. And for spanish readers, I translated it.
At the end of the pattern I’ll say how to sew the ears (bunnies and lambs have the same ears, per example). I don’t say where you have to start filling the pieces. My lamb has two 9mm eyes and a little bell.