You step into the bathroom and your dog starts scratching, whining, or barking before you turn on the tap. They may be struggling with a barrier or with being apart from you, even for a minute. The aim is not to wait until they exhaust themselves. For now, keep essential routines manageable: use a safe arrangement that prevents injury to the door, paws, or dog while you plan practice.
If the dog injures themselves, soils from distress, or cannot tolerate any separation, speak with your veterinarian and a qualified, reward-based behavior professional. A sudden new change deserves a health check. Video of ordinary short separations, obtained without leaving the dog in distress, can help you describe the pattern.
Start below the panic point
At an easy moment, walk toward the bathroom and return before your dog becomes worried. Reward calm behavior. Across short sessions, touch the door, move it an inch, then briefly close it only when each earlier step is comfortable. Always return before whining or scratching begins. If they react, reduce the duration or leave the door open on the next try. Give your dog a comfortable resting spot away from the doorway and teach them to relax there while you move around the house.
Do not increase time simply because the dog eventually becomes quiet, they may still be distressed. The useful measure is whether they remain comfortable from the start. If progress stalls, individual help is better than repeatedly asking for a harder minute. For a fuller dog-paced approach to separation, see the separation-anxiety guide, individual help matters if even tiny separations cause panic
Sources: Dogs Trust: Separation anxiety in dogs - signs and how to help. Dogs Trust: Helping your dog get used to spending time alone.