Whether it is sadness over the loss of a feline or human friend. Cats can and do grieve. While cats do no like change in general. They often adapt to without some support. But we can help get them through the process. Keep the routine the same as usual. Spend quality time. Check your emotions. Cats are very sensitive creatures and they pick up on emotions. If you are also grieving deeply, your cat is likely to grieve the loss harder. Seek veterinary help if your cat seems to be stuck in grief for a long time or is acting sick or refusing to eat.