You can spawn a sheep. make an recipe for ‘sheep’ in the carpenter list called sheep_recipe.
Copy other product and change produces to this.
"ingredients": [
{
"material" : "wood resource",
"count" : 1
}
],
"produces": [
{
"item":"stonehearth:sheep"
}
]
}
And add to carpenter list
"file(sheep_recipe.json)",
makes a sheep and put them in storage . You can shear it for wool.