Recognizing the early signs your dog is stressed or anxious is crucial for preventing behavioral issues and ensuring your pet’s well-being. By understanding these signals, you can intervene before a situation escalates, helping your dog feel safe and secure.
Here is a comprehensive guide to the physical, behavioral, and physiological indicators that your dog is experiencing stress.
Subtle Facial Expressions and Body Language
Dogs communicate primarily through body language. Often, the earliest signs of anxiety are quiet and subtle. If you know what to look for, you can spot discomfort long before your dog growls or snaps.
The Eyes: Whale Eye and Dilated Pupils
You might notice your dog turning their head away from a trigger but keeping their eyes fixed on it. This exposes the whites of the eyes (the sclera), a phenomenon known as “whale eye.” This is a clear indicator of fear or guarding. Additionally, dilated pupils when there is no change in lighting suggest the autonomic nervous system is in fight-or-flight mode.
The Mouth: Lip Licking and Yawning
Unless your dog has just finished a meal or woken up from a nap, these behaviors are significant stress indicators.
- Lip Licking: Quick, repetitive flicks of the tongue over the nose often signal “I am uncomfortable” or “I mean no harm.” This is an appeasement signal used to diffuse perceived threats.
- Yawning: A stress yawn is typically more prolonged and intense than a tired yawn. You may see your dog yawn repeatedly in a vet’s waiting room or during a training session that is too difficult.
Ear Positioning and Tucked Tail
Ears usually tell a clear story. If your dog’s ears are pinned back flat against their head, they are likely anxious. A tucked tail—clamped between the hind legs—is the universal sign of fear. However, in some breeds with naturally curled tails, a tail simply held lower than usual can indicate stress.
Physiological Reactions
Stress triggers a physical response in dogs similar to humans. You cannot train these symptoms away; they are involuntary biological reactions to fear or anxiety.
Excessive Panting and Drooling
If your dog is panting heavily but has not been exercising and the room is not hot, it is a “stress pant.” This type of panting often looks different—the tongue may be spatula-shaped (wide at the bottom), and the breathing is rapid and shallow.
Similarly, sudden excessive drooling or foaming at the mouth in a dry-mouthed breed indicates acute nausea or high anxiety.
Excessive Shedding and Sweaty Paws
You might notice a sudden cloud of fur when you pet your dog at the vet. This “blowing coat” is a rapid shedding response triggered by adrenaline. Additionally, dogs sweat through their paw pads. If your dog leaves wet footprints on the floor or examination table, they are experiencing high levels of stress.
Shaking or Trembling
Trembling is a common sign of terror, often seen during thunderstorms or fireworks. However, you should also look for the “shake off.” After a stressful interaction—like a hug they didn’t want or meeting a strange dog—your dog might shake their entire body as if drying off water. This is a mechanism to physically release muscle tension and reset their baseline.
Behavioral Changes and Displacement Activities
When dogs do not know how to handle a situation, they often engage in behaviors that seem out of context.
Displacement Behaviors
These are normal behaviors performed at inappropriate times to deflect stress.
- Sudden Sniffing: If you call your dog or ask for a command and they suddenly become intensely interested in sniffing a specific spot on the ground, they are likely disconnecting from the pressure you are applying.
- Scratching: Abruptly sitting down to scratch an itch that wasn’t there a moment ago can be a way to avoid a stressful interaction.
- Genital Grooming: Excessive or frantic grooming of the genital area can be a self-soothing mechanism.
Avoidance and Hiding
A stressed dog will often try to remove themselves from the environment. You might find them:
- Hiding behind your legs.
- Retreating under furniture or into a crate.
- Turning their back to you or “shutting down” and refusing to move.
If your dog attempts to hide, do not force them to interact with the source of their fear. This removes their option of “flight” and may force them into “fight.”
Vocalizations and Destructive Habits
While subtle signs are easy to miss, vocal and destructive behaviors are often the most problematic for owners. These are usually symptoms of panic or frustration rather than disobedience.
Changes in Vocalization
An anxious dog may whine, whimper, or bark excessively. Separation anxiety, in particular, often manifests as monotonous, repetitive barking or howling that persists for the duration of your absence.
Destruction as Coping
Chewing, digging, and tearing creates a release of nervous energy. If you come home to destroyed door frames, chewed windowsills, or shredded pillows, your dog is likely panic-stricken, not acting out of spite.
House Soiling
If a house-trained dog suddenly urinates or defecates indoors, it is a major red flag. Stress causes a loss of bladder control. This is common in separation anxiety or when a dog is terrified by loud noises.
Knowing When to Intervene
Context is key when evaluating these signs. A yawn before bed is normal; a yawn when a child hugs the dog is a warning.
If you notice these signs frequently, you must act to lower your dog’s stress threshold. This involves removing the stressor, creating a safe “den” area, and establishing a predictable routine.
If the anxiety appears chronic or triggers aggression, you should consult a veterinarian to rule out pain, followed by a certified professional dog trainer or veterinary behaviorist. Recognizing these signs early is the first step in helping your dog live a happier, calmer life.

