The weight for an adult or "senior" Harlequin rabbit will vary due to the uniqueness of each animal, but a weight of 6.5 to 9.5 pounds is considered to be in the "healthy" range. Females should be between 7 and 9.5 pounds, and males fall between the range of 6.5 to 9 pounds.
As far as the adult harlequin rabbit is concerned, its weight can reach up to 22 pounds. On the other hand, the average weight, depending on the type of harlequin rabbit, can range from 2 to 25 pounds.
The ideal weight for a Harlequin rabbit is 2-6 pounds. If you want to fatten him up for other reasons, then 10 pounds is the limit before heart disease will occur. Harlequins are part of the Dutch rabbit family and are active by nature, keeping his weight controlled.
Harlequin rabbits are a medium sized rabbit, typically reaching about eight pounds by the time the rabbits reach adulthood, but may range in size anywhere from six and a half and nine and a half pounds.
the average adult weight is normally between 6 1/2 and 9 1/2 pounds. They will get to this weight at about 10 months of age. However, if these rabbits do not get the proper exercise I have seen them get up to 15 pounds. A 15 pound rabbit is a REALLY big rabbit!