What characteristic of rabbits makes them difficult to handle?

Rabbits possess strong back legs that enable them to kick forcefully. This strength can lead to severe scratches or injuries if they feel threatened or are improperly handled. Their natural instinct is to retreat quickly from perceived dangers, and their powerful hind legs can be a defensive mechanism, making it crucial for anyone handling them to be aware of this risk. Understanding this characteristic helps handlers take appropriate precautions, such as supporting the rabbit properly during handling to minimize the risk of injury to both the animal and the handler.

The other choices highlight different traits of rabbits, but they do not capture the significant challenge posed by their powerful legs in terms of handling and restraint. Small size and timid nature, sensitive skin, or quick movements might present their own issues, but it is the strong legs that pose a more direct risk during handling.