As a Shih Tzu owner, understanding your male dog’s reproductive anatomy helps you monitor his health. While size varies between individuals, most male Shih Tzus have proportional anatomy suited to their small stature (typically 9–16 lbs).
This guide covers everything from average measurements to health concerns—helping you keep your furry friend happy and healthy.
What’s the Average Size for a Male Shih Tzu?
A mature Shih Tzu’s penis when relaxed usually measures:
- 1–1.5 inches in length
- May appear slightly larger during arousal due to normal bulbus glandis swelling
Since Shih Tzus are small but not as tiny as teacup breeds, their reproductive anatomy is slightly more substantial than Yorkshire Terriers but smaller than medium-sized dogs.
Note: For a personalized estimate based on your dog’s weight and age, you can check our canine size calculator.
Key Factors Affecting Size & Development
1. Genetics
- Show-line Shih Tzus tend to have standardized proportions
- “Teacup” varieties may be smaller but often come with health risks
2. Age
- Puppies show little visible development before 6 months
- Full maturity reached by 12–18 months
3. Neutering Status
- Intact males have more prominent anatomy
- Neutered dogs may experience slight reduction over time
Common Health Concerns
Phimosis (Tight Foreskin)
- Can prevent normal urination
- Requires veterinary attention if severe
Balanoposthitis (Infection)
- Symptoms: Redness, discharge, excessive licking
- Treated with antibiotics and improved hygiene
Cryptorchidism (Undescended Testicles)
- Increases cancer risk
- Surgical removal recommended
Breeding Considerations
Shih Tzus can safely breed, but their compact size requires precautions:
- Females should be at least 2 years old before breeding
- Natural mating is usually possible but supervise closely
- C-sections are common due to the breed’s large head size
Neutering: What to Expect
Benefits:
- Eliminates testicular cancer risk
- Reduces marking and roaming behaviors
Best Age:
- 6–12 months for most Shih Tzus
- Consult your vet for individual timing
Hygiene & Grooming Tips
- Regular Cleaning
- Gently wipe with damp cloth weekly
- Check for irritation or unusual discharge
- Coat Maintenance
- Keep fur trimmed around genital area
- Prevents matting and bacteria buildup
When to See the Vet
Seek professional care if you notice:
- Swelling or lumps in genital area
- Difficulty urinating
- Blood in urine
- Excessive licking indicating discomfort
Myths vs. Facts
“Smaller Shih Tzus can’t breed”
They can, but very petite dogs may need extra monitoring
“Neutering causes obesity”
Weight gain only occurs if diet/exercise aren’t adjusted
“Size affects temperament”
Personality depends on genetics and training, not anatomy
Final Thoughts
While Shih Tzu penis size falls within a typical range, focus on health and function rather than measurements. Regular vet checkups, proper grooming, and attentive care will ensure your pup stays comfortable.
For more personalized insights about your dog’s development, consult your veterinarian. With proper care, your Shih Tzu can enjoy a happy, healthy life!
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