Yes, rabbits can use cat climbers. While the structure of a standard cat climber may not be designed to support a rabbit’s weight, there are specialty cat climbers available that have been specifically designed with larger animals in mind. These wider and sturdier structures provide additional support for heavier animals such as rabbits while still offering them the opportunity to climb and explore their environment. When introducing your rabbit to a new cat climber it is important to ensure that the structure is securely attached before allowing the animal access, as well as providing some initial guidance on how to safely navigate around its many levels.