When building cages, which side of the wire should face towards the rabbit?

When constructing rabbit cages, the rough side of the wire should face towards the rabbit. This is the correct choice because the rough surface provides better grip and traction for the rabbit's feet. It helps prevent slips and potential injuries to their paws, supporting their natural behavior, which includes climbing and moving around within their enclosure.

In contrast, if the smooth side were facing inward, it could create a slippery environment that may lead to accidents or discomfort for the rabbit. Additionally, having the rough side on the inside doesn't expose sharp edges or points that could harm the rabbit, assuming the cage was built correctly with appropriate wire. This design consideration is crucial for making sure the rabbit has a safe and comfortable habitat.