What are some signs that my cat is in pain?

Some signs your cat may be in pain could include: they may go and hide (which I call suffering silently), they may be reluctant to eat or drink, they might show some lameness or mobility issues, they may not groom themselves as much resulting in an unkempt or matted hair coat. Pain signs can be subtle and cats don't usually vocalize when they're in pain, although they could if the pain is severe, especially if you touch a painful area. They might show aggression or even vocalize with some pain.