My pink sheep and other livestock disappeared

This is different for me because it never happened before but all of my livestock that was leashed disappeared after a day or 2. I was ok with it until i found a pink sheep at a village and the same thing happened before I could make a Tik tok about it. Mr. Shrimpy needs to be back in his enclosure, he was dear to me and I miss him already. STOP TAKING MY ANIMALS.