Dogs are clingy for three basic reasons. Your dog may have great anxiety about being left alone. Various illnesses may cause the dog to seek comfort from your companionship. And a female dog about to be in heat may tend to stick closer to her owner.
Separation Anxiety
Separation anxiety entails a dog’s great emotional discomfort with being apart from family members. The dog may even demand to be next to its owner at all times when they are together. Anxiety can lead the dog to engage in destructive behavior at exits and against the owner’s belongings, cry out, salivate, pace restlessly, and engage in repetitive compulsive behaviors. These behaviors usually happen within 30 minutes after the dog’s owner has left, and can occur in dogs of any age and breed.
Illness
A dog may seek protection by staying close to it’s owner when the dog has an illness coming on. Aging, while not an illness in itself, can weaken a dog, making it more susceptible to illness. When an older dog begins to lose its vision and hearing, it becomes more vulnerable, and less able to care for itself. Epileptic dogs often cling to their owners when they sense that they are about to have a seizure. Epileptic seizures involve uncontrollable jerking of the dog’s entire body, along with a loss of awareness or consciousness while the seizure is in progress. The seizure episode typically lasts for 30-90 seconds. Beagles, Keeshonds, and Golden and Labrador Retrievers are more likely to be genetically predisposed to seizures. Seizures can be caused by many things, including trauma, toxins, a brain tumor, infection, or may even have no identifiable cause.
Estrus
A female dog who is receptive to mating, or “in heat,” is in estrus. This happens about twice a year, starting before the dog is one year old, and lasts from between three to four weeks. When the dog is in proestrus, just before she is ready to breed, her vulva will look swollen, she is likely to bleed from her vagina, and she may become clingy. When the dog is ready to breed, she has entered the state of estrus.