Hi! I'm a lionhead breeder and I hope I can help you out here.
First of all, lionheads come in two categories:
single mane
and
double mane.
Now this does not refer to their looks (although it affects how theylook) but it refers to how many genes they actually carry. A singlemane lionhead actually looks different than a double mane lionhead afew days after birth because when the fur comes in - a single mane willget fur almost all over (except for the head area where the mane willbe) while a double-mane lionhead will be bald in the hindquarters wherethe skirting is. It is ONLY at this point in time when you can tellabsolutely, positively, for sure whether or not the lionhead is singlemane (got the mane gene from one parent only) or double mane (got amane gene from each parent).
Many of the earlier double mane lionheads (and even some nowadays) willappear to be a single mane as they get older and go through their firstmolt. They may even lose their mane altogether and never have it comeback.
I have a few lionheads here that if you saw them you would highly doubtthat I was telling you the truth and you'd think they were Netherlanddwarfs or something...
But a single mane lionhead also sort of "looks" different than a doublemane lionhead once the mane comes in. Frequently, single mane lionheadswill have "wispy" manes and it will be like long hair - versus thecrimped wool that a double mane usually has.
If you go to buy a lionhead and you want the mane to stick - look forone that has very crimped (not curly but as if you took a hair crimperto it) mane. Lionheads with that type of mane usually keep it.
However, another thing you may be seeing is lionheads that are younger vs. lionheads that are older.
Once a lionhead is older and goes through its first molt - it willusually lose its skirting around the back. If it is a show lionhead, Ican guarantee you that the breeder is grooming those hindquarters andpraying that the skirt comes out because a senior lionhead is NOTsupposed to have the skirting at all.
Here are some more sites for lionhead information.
http://www.lionheadrabbit.net
http://www.lionhead.us/~ this is the site for the North American Lionhead Rabbit Club
and if you go to:
http://www.lionhead.us/standard06ARBA7.htm
you will be able to read the standard and see a drawing of what a lionhead SHOULD look like.
I hope this helps. If you have more questions - please feel free to ask!
Peg