Hiding is a normal response for canines in a number of situations. In some cases, however, the issue may be a behavioral problem or even an illness or injury.
Abuse
Dogs who have been abused or neglected tend to be understandably nervous and fearful and small places, like under your bed or in your closet, feel comforting and safe to most canines. Dogs who hide in response to fear should not be treated roughly or aggressively as fear can sometimes turn to hostility if the animal is provoked.
Illness or Injury
Canines may also hide if they are feeling unwell. If your dog starts hiding on a regular basis with no apparent provocation, particularly if it is combined with lethargy, loss of appetite, indications of pain and discomfort, retching or vomiting, a visit to your veterinarian may be a good idea.
Noise Anxiety
Many dogs are fearful of loud or sudden noises and will bolt and hide when they occur. Some common causes of noise anxiety in dogs include vacuum cleaners, construction noises, gunshots, and fireworks. Phobias to noise generally intensify with repeated exposure and in severe cases may require anti-anxiety drugs to resolve.
Protection and Safety
In some situations, your dog may simply be trying to find a safe place to stay out of the way or to avoid something that appears to be dangerous. This type of response is responsible for dogs hiding when furniture is being moved or when they are in an unfamiliar environment. It is also sometimes responsible for dogs hiding during fires rather than escaping, so it is important to let fire department personnel know if you have a dog in the event of a fire.
Solitude
Often, dogs who are sleeping under the bed or couch or in small corners aren’t necessarily hiding due to negative emotions, but may simply be finding a nice quiet place to spend some time undisturbed or to take a nap. This type of denning behavior is seen in canines of all sorts.
Storm Phobia
Storm phobia is one of the most common of canine phobias and may have multiple triggers that cause fear and discomfort for your canine companion. Although the noise that thunder creates is a large part of most dogs trepidation, both the electrical energy that is generated and the flashing of the lighting contribute to this severe fear.
Visiting Strangers
Many dogs may become nervous when new animals or people are introduced to their territory. If that is the case with your dog, you may be able to curb this behavior using deconditioning training.