Remove the cause of the biting: Try to identify what's causing your dog to bite its tail. Common causes include allergies, skin infections, fleas or ticks, boredom, and anxiety. Once you know the cause, you can take steps to eliminate it.
Provide plenty of exercise: Exercise can help reduce anxiety and boredom, which can contribute to tail-biting. Try to give your dog at least 30 minutes of exercise every day.
Distract your dog with toys: Provide chew toys and other fun activities to distract your dog from its tail. Make sure the toys are large enough to discourage your dog from swallowing them.
Train your dog: You can train your dog to stop biting its tail by using positive reinforcement methods. When your dog chews on its tail, immediately redirect its attention to a toy or treat. You can also use verbal commands or hand signals to deter your dog from biting its tail.
Consult a veterinarian: If you cannot stop your dog from biting its tail, consult a veterinarian. They may prescribe medication or recommend other treatments.