Cats are experts at hiding pain. Small changes in routine are often the first clue that something is wrong.

Changes in appetite or thirst

Eating much less, or drinking much more, for more than a day or two is worth a call.

Hiding or grumpiness

A friendly cat who suddenly hides, or a calm cat who starts to growl when touched, may be in pain.

Litter box surprises

Straining, going more often or missing the box can point to urinary trouble. Treat it as urgent.