Cats are sneaky creatures, masters at hiding anything from pens to hair clips and illnesses. Numerous reasons are to blame, but one theory involves their genetic makeup. "Like wild animals, cats may feel the need to cover their illness so they're not viewed as being vulnerable," says Marie S. McCabe, DVM, vice president of the Human Animal Bond Division with the American Humane Association.
Knowing your cat by sight and touch can help you understand what "normal" is. Here are six clues that your cat could be under the weather.