Rabbits have soft stools due to the following five reasons:

1. Caused by cold: It may be because the weather is getting colder and the owner has not taken measures to keep warm, causing the rabbit to catch cold.

2. Eating too much: It may be that the rabbit eats too much, causing symptoms of indigestion, causing the rabbit to have soft stools.

3. Food spoilage: It may be caused by the rabbit eating spoiled food or unclean food.

4. Excess nutrition: It may be caused by excessive intake of nutrients, mainly protein, by rabbits. It may also be caused by excessive supply of snacks, which may also cause soft stools in rabbits.

5. Parasites: It may be that there are parasites in the rabbit's body, causing soft stools. Once discovered, the parasites must be dewormed in time.