Farm Merge Valley -- Loom Station

Okay -- I am level 28 -- Have a repaired Loom Station -- but can not seem to be able to spawn Sheep to make the wool to produce items in the Loom Station without having to purchase the needed wool.

Over the past 3-4 days -- I have spawned 6 to 7 THOUSAND boxes and still NO sheep.....help please -- Thank you very kindly !!!