Yes, Shih Tzus do need haircuts. Their fur is very thick, and if not trimmed regularly, it can become dirty and matted. While a dog's coat provides protection for their skin, when giving a Shih Tzu a haircut, it's crucial not to shave them completely bald. Instead, follow a process of first brushing, then washing, drying, and finally trimming.

Shih Tzus are long-haired dogs that require significant grooming. If owners are neglectful, failing to trim or bathe them, Shih Tzus can become quite unkempt. Regular grooming is therefore essential. It's important to note that while you can trim a Shih Tzu's fur to a shorter length, avoid shaving it completely. Ideally, leave about 1 to 2 centimeters of fur. Dogs rely heavily on their coats, and shaving it all off deprives them of this protective layer.
Step-by-Step Guide to Shih Tzu Haircuts
For any dog, the grooming process should start by thoroughly cleaning their fur, drying it, and then using a dog-specific comb to smooth it out before trimming.
1. Brushing
Shih Tzu fur is prone to matting if not brushed frequently. They often get food caught in the fur around their mouths. So it's very important to brush this area before any trimming.
2. Washing
Before trimming the fur around your Shih Tzu's mouth, you should wash it. Water temperature should be moderate, not too hot or cold, about 38-40°C. You should use a dog-specific shampoo to avoid harming the dog's skin and fur and rinse well after washing.
3. Drying
After washing, towel dry your dog, and then use a blow dryer to dry the fur around their mouth. Be aware that dogs are often afraid of the sound of a blow dryer, so keep it at a distance, set it to the lowest setting, and brush the hair while drying, resulting in a more natural, fluffy look.
4. Trimming
When trimming a Shih Tzu's fur, aim to accentuate their best features and downplay less desirable ones. Trim their fur into a rounded shape to highlight their body. Shape the ears into rounds, and don't make the chest too wide; the throat, chest, and front legs should form a straight line. Keep the base of the tail slightly high, and the long, thick fur should stay at the center of the back.