my housemate found a stray cat, that just got into a fight with another cat. Now the cat is currently not moving at all, only the mouth a bit, but no voice. Seeing that it is sunday, almost all vet are closed. Called a vet just now, the doctor said it's normal coz the cat is stressed... is it really normal? When cat stressed, they just lie down, not moving at all even when give food/water?