When he was little, Erha was usually very cute and adorable. They are small in size, have soft fur, and have big and bright eyes, full of curiosity about the world. Erha during this period is usually very lively and active, likes to explore the surrounding environment, and also likes to interact and play with its owner. Due to their young age, their destructive power is relatively small. Although they may sometimes bite some small objects, they are generally relatively easy to manage.

As Erha grows up, their appearance also changes significantly. The body becomes larger and larger, and the hair becomes thicker and thicker. At the same time, their characters gradually mature and are no longer as impulsive and curious as they were when they were young. However, that doesn't mean they become quiet and sedate. On the contrary, the grown-up Erha still maintains strong energy and needs a lot of exercise and activities to consume his energy. Without adequate exercise and entertainment, they may become restless and even vent their energy by tearing down the home.