Cows/Llamas and Family Inventory

I have tried EVERYTHING possible to have a cow or llama again. My Sim used to raise prize winning cows and llamas and then I decided to move the family... and I have never been able to have a cow or llama since. They get stuck in the family inventory and cannot be placed and new ones cannot be placed. 

I have tried: 

to buy new barns

to buy new cows/llamas

to "assign" them to the shed

to move several times

leave the lot and come back

to place them on the lot

NOTHING WORKS. So I just can't ever have cows or llamas again. The chickens somehow work and can be placed from the family inventory.  WHY CAN'T THE COWS OR LLAMAS? FIX THIS!!!!