Amelia Taylor – Cornell University College of Veterinary Medicine
Common Reasons Dogs Pee in Their Sleep
1. Urinary Incontinence (Most Common Cause)
Urinary incontinence occurs when a dog loses bladder control, especially during deep sleep.
- Common in spayed female dogs
- Often caused by weakened urethral muscles
- More noticeable when lying down or sleeping
This condition is medical—not behavioral.
2. Hormonal Changes After Spaying
After spaying, estrogen levels drop.
- Estrogen helps maintain bladder muscle tone
- Low levels can lead to leakage during rest
- Can appear months or even years after surgery
This is one of the most common causes in adult female dogs.
3. Urinary Tract Infections (UTIs)
UTIs can irritate the bladder.
- Frequent urination or dribbling
- Strong-smelling urine
- Licking the genital area
Dogs with UTIs may leak urine when relaxed or asleep.
4. Age-Related Muscle Weakness
Senior dogs may lose bladder control due to:
- Weakened pelvic muscles
- Reduced nerve signaling
- Cognitive decline
This is common but still manageable with veterinary support.
5. Excessive Water Intake or Certain Medications
Some conditions or medications increase urine production.
- Steroids
- Diuretics
- Kidney-related issues
A full bladder combined with relaxed muscles can lead to leakage during sleep.
6. Neurological Issues (Less Common but Serious)
Spinal injuries or nerve damage can affect bladder control.
- Weak hind legs
- Difficulty standing
- Sudden behavior changes
These require immediate veterinary evaluation.
What You Should Do Right Away
- Schedule a vet visit for proper diagnosis
- Note when and how often leakage occurs
- Avoid scolding—this can increase anxiety
- Take your dog out to urinate right before bedtime
- Use washable bedding while treating the issue
When to See a Vet Urgently
Seek prompt veterinary care if:
- Urine leakage appears suddenly
- There is blood in urine
- Your dog seems painful, lethargic, or unwell
- Incontinence worsens quickly
