Mature rabbits are by far the easiest to sex. However, as you can see from the above picture, simply looking at the vent--that's the term we use to refer to all rabbits' private areas, including the anus and vulva or penis--is not enough to determine sex.
|Scrotum on a mature buck.|
Once you have the rabbit on its back, use your free hand to expose the vent. One finger (or your thumb) should be on the tail, and another finger (or your thumb) should be on the furry mound, such that your fingers frame the vent.
|Finger on tail, thumb on mound to frame rabbit's vent.|
|The anus is the slit that has fur.|
The mound is a raised area of fur,
opposite the tail.
|Mature doe - note the slit and |
close proximity to the anus
|Mature buck - note the pointed-cylindrical protrusion|
and distance from the anus.
|5-week-old doe: slit very near anus|
|5-week-old buck: tube protrusion slightly away from anus|
|3-week-old buck: tube protrusion slightly away from anus|
|3-week-old doe: slit very near anus|
|5-week-old buck slightly overstretched,|
looking like a slit, but still very far
|3-week-old buck very overstretched,|
looking like a slit, but note the gap
between the slit and the anus.
It is also possible to sex kits that are only a day or two old! (click to read that article)