How to Recognize Pain in Your Dog: The Subtle Signs Most Owners Miss

The capacity of dogs to conceal pain is one of the most significant welfare challenges in veterinary medicine. A dog that limps obviously is in enough pain to override the instinct to conceal it — a dog in that much obvious pain has typically been in significant pain for considerably longer than the limp has been visible. The subtler signs of pain precede visible dysfunction by days, weeks, or sometimes months, and an owner who knows them can intervene earlier and more effectively than one who waits for unmistakable signals.

Behavioral Changes That Indicate Pain

Changes in the dog’s normal behavioral patterns are frequently the earliest pain indicator. A social dog that begins avoiding contact or seeking less interaction may be experiencing pain that physical contact exacerbates. A dog that stops doing things it previously enjoyed — refusing walks it used to eagerly anticipate, avoiding the stairs it previously ran up, no longer jumping to its favorite resting spot — is often making those changes because the activities have become painful. Increased sleep, reduced play initiative, and greater general quietness than the dog’s established normal can all precede overt mobility changes by weeks.

Postural and Movement Changes

Watch for changes in how your dog holds itself. A dog carrying its head lower than usual may have neck pain. A dog that sits asymmetrically or avoids sitting in its normal position may have back or hip pain. Difficulty rising from a resting position, particularly stiffness in the first few steps after rest that improves as the dog “warms up,” is a classic pattern for osteoarthritis. A dog that pants without the cause of heat or exercise may be panting from pain — research has established pain as a trigger for panting in dogs.

Facial Expression: The Most Underused Pain Indicator

The Canine Grimace Scale, developed by veterinary researchers, identifies specific facial muscle changes associated with pain in dogs: brow lowering and inner brow raising, orbital tightening (squinting), cheek tightening, ear position changes toward the back of the head, and lip corner pulling. These are subtle changes that become apparent when you compare a dog’s face during a pain-free period to its expression during a suspected pain period. Photographing your dog’s relaxed facial expression regularly provides a comparison baseline. Trust your instincts — owners who say “my dog doesn’t look right” are often correct even before they can articulate specifically what has changed.