Mm Lionhead Junior
The Mane of the Lionhead Rabbit
The presence of a mane encircling a
rabbit's head is certainly an incredible sight. So what causes this and
what do we know about it? The mane on a Lionhead is the result of a genetic
mutation. Unlike most other genetic mutations in rabbit fur types it
is a dominant gene. This means you will see its effect on a first generation
The current agreed on letter designation for the mane gene is the letter
M = mane
m = no mane
There are two possible combinations of the M gene that produce Lionhead
Lionheads with two mane genes (MM), and Lionheads with one mane gene
Since the mane gene is a dominant gene a rabbit needs only one mane gene
(Mm) to have a physical mane.
If a rabbit has no mane gene (mm) it will NOT have a mane
and will never produce one unless it is bred to a rabbit with a mane.
It is possible that there are additional modifiers seen in some Lionheads
that increase density or length and effect texture much the same as you
see in Angora (wooled) breeds.
When visiting Lionhead websites or chat rooms as well as if
you look at some Lionhead pedigrees you will see terms and shorthand
notes denoting you may not be familiar with. Some of this information
is common genetic coding used in animal breeding for many years but some
of the terms are new. These new terms and codes have been devised by
breeders to communicate information that there never has been a need
to communicate before. This is how truly unusual this breed is!
Shorthand and terms -
Lionhead with one
gene for the mane. This rabbit will have a mane.
It is called:
- single mane gened
- 1XM (shorthand)
- SMG (abbreviation)
A Lionhead with two
genes for the mane. This rabbit will have a mane.
It is called
- Double Mane gened
- two mane genes
- 2XM (shorthand)
- DMG (abbreviation)
A Lionhead with no mane gene. This rabbit will have NO MANE.
It is called
- a slick
- a non maned Lionhead (these can be "purebred Lionheads depending
on the breeder and how they handle them in their breeding program)
- a normal fur
- 0MX (shorthand)
General Genetic Shorthand and Terms -
F1 is a purebred Lionhead crossed with a rabbit of a different breed.
Mostly Netherland Dwarf, Polish. In addition some Britannia Petites,
Florida Whites, Holland or Mini Lops and Mini Rex have been used. You
may also find almost any other breed listed including Dutch, New Zealands
It is questionable if a Lionhead hybrid without a mane can be considered
a F1 generation because - to be considered a generation the offspring
must look like the breed, meeting basic breed requirements. Many Lionhead
breeders do count non-maned rabbits that are produced in a F1 Lionhead
F2 is a F1 crossed to a Purebred Lionhead or another hybrid that
is F1 or F2. It denotes another generation of Lionhead breeding.
F3 is a F2 bred to a purebred or a F3 or another F2. It denotes you now
have three generations of Lionhead breeding before another bred shows
on the pedigree.
F4 is the same as purebred. A F3 bred to another F3 or a purebred would
produce bunnies with four generations of Lionhead on the pedigree. This
is what is required by the ARBA (American Rabbit Breeders Association)
to be considered for registration as a PUREBRED if the Lionhead was a
* Some people denote their crosses with percentage number such as 1/2
Lionhead or 3/4 Lionhead but the F system is recognized but almost all
animal breeding materials, and is the form most commonly used.
HYBRID is a Lionhead that has rabbits of a breed other then Lionhead
showing on a four generation pedigree.
PUREBRED is a rabbit that meets specific breed requirements and has a
four generation pedigree showing individual information on each rabbit
on the pedigree.
* Currently Lionhead breeders also consider Lionheads imported form overseas
as purebred even though most do not have a complete pedigree.