Chinchillas should never be bathed in water under normal circumstances. Their fur is among the densest of any land mammal, with up to 20,000 hairs per square centimeter. This extreme density means water cannot evaporate quickly and the fur stays damp against the skin for a dangerously long time.

Wet fur on a chinchilla creates ideal conditions for fungal infections, skin irritation, and hypothermia. Even in a warm room, the trapped moisture near the skin can lower body temperature to dangerous levels. Fungal ringworm is a particularly common consequence of wet fur in chinchillas and can spread to other pets and humans.

Instead of water baths, chinchillas clean themselves with dust baths. Provide a sturdy container filled with two to three inches of chinchilla-specific volcanic dust two to four times per week for about 10 to 15 minutes per session. The fine dust penetrates the dense fur, absorbs excess oils and moisture, and keeps the coat fluffy and healthy.

Do not use regular sand, as the particles are too coarse and can damage the fine fur. Chinchilla dust is made from pumice or volcanic ash ground to a very fine consistency. Replace the dust when it starts to look clumpy or soiled.

If your chinchilla accidentally gets wet, act quickly. Gently blot the fur with a clean, absorbent towel. You can use a hair dryer on the lowest heat setting held at a safe distance, but many chinchillas find the noise stressful. Keep the chinchilla in a warm, dry room and monitor closely for shivering, lethargy, or skin changes over the following 48 hours.

In rare medical situations, a veterinarian may need to clean a specific area with a damp cloth. This should only happen under professional guidance and the area should be dried immediately and thoroughly.

Overbathing with dust can also cause problems, including dry skin and eye irritation. Stick to the recommended schedule and remove the dust bath after each session to prevent your chinchilla from using it as a litter box.