The animals trials for coronavirus vaccines have always failed because the animals got sick and/or died :
Studies in Ferrets : https://t.co/PHdRnzAXvt
Cats: https://t.co/VxpN2INoHK
Mice : https://t.co/KBxjezvpNN
Mice: https://t.co/6cHZfWkOWI
Mice: https://t.co/2ds5DPiLFS