Thanks, Ravn! Note: the connector is called a 6-pin mini-DIN, and the keyboard and mouse connector pinout charts above show six pins, but some mice and keyboards are made with the (male) connector having only four pins (i.e., with the unconnected pin 2 and pin 6 missing).
Use general age categories to categorize the rabbit. This will give you a good way of starting your assessment. A young rabbit is up to 9 months of age. An adult rabbit is approximately 9 months to 4 - 5 years of age. An elderly rabbit is 4 - 5 years upwards. Some rabbits live to be 10 - 12 years of age.
On average the smaller breeds will mature faster than larger breeds. In addition, within certain rabbit breeds there is also variation between the varieties of that breed. It has also been observed that does will usually reach sexual maturity thirty to sixty days earlier than males of the same breed and variety. Reach sexually maturity at 125 to 150 days of age. Reach sexually maturity at 150 to 180 days of age.