Other than that your pet is probably doing it for the same reasons why he she digs at the carpet or the furniture.
Why is my dog scratching the carpet at night.
Also he she could be in heat and ready to mate.
Why does my dog lick and scratch at night.
Another good rule of thumb is to put a belt around a dog s rib cage.
One of the main reasons for a dog scratching the floor at night has to do with nesting.
Abnormal behavior like continuous carpet scratching may indicate a physical and or mental condition that your veterinarian must diagnose.
An established dog is unlikely to suddenly develop separation anxiety without a sudden life change.
Dogs may instinctively scratch the carpet especially when preparing to go to sleep as they like to mark the spot.
If your dog s scratching is keeping you awake at night that s a key indication he could have atopic dermatitis or allergic disease.
Back in the day dogs would do this in the wild to create themselves a small den to curl up into.
For example if your dog has a thyroid imbalance it could compel him to engage in destructive behavior like scratching the carpet.
If the majority of the itching is behind the belt it s probably flea allergies.
Door scratching usually occurs when your dog wants to go outside to play or pee.
Digging and scratching at the carpet in the middle of the night can be a key sign that they re struggling with separation anxiety but should only really be seen with new dogs in the home or puppies.
However the scratching behavior may become an obsession and this can be a problem.