There are many ways to select the scale-tailed flying squirrel, such as:

1. Choose the scale-tailed flying squirrel with good eyes and no eye mucus.

2. It depends on whether the scale-tailed flying squirrel has a runny nose. If there is, it is best not to pick it. It may catch a cold.

3. It depends on whether the shape of the ears of the scale-tailed flying squirrel is in good condition and whether there are any signs of being bitten.

4. See if the Scale-tailed Flying Squirrel's teeth protrude outside, Whether the coat is light, there is no hair loss or tumors.

5. It depends on whether the squirrel is walking normally, whether there is a feeling of stiffness, and whether the limbs are healthy or not.

6. Check to see if there are spots near the tail and stomach of the scaly flying squirrel. The spots indicate that the scaly-tailed flying squirrel may have diarrhea.