Pictures to this section will be added later!
The most notable variations are the alternative colours of the bears, rabbits, porcupines and turtles. There was a set of grey bears and brown rabbits that were probably US exclusive releases. Also chocolate brown variations of bears and rabbits were published there. In Denmark, a set of yellow bears was published, but it's yet to be confirmed whether they are genuine. These variations are extremely rare and sought after - also by me! The normal colours for these animal families are brown for bears and grey for rabbits. The brown turtles are not a US exclusive, but they are quite rare as well. The normal colour for turtles in the FF line is green. The dark brown porcupines are a set of which little is known about. The normal colour for porcupines is a creamy light colour.
A more common colour variation to be found is that there are some rabbits in different shades of grey. They came in lighter grey and darker grey, of which the darker grey is less common and made with a different mould. The Porcupine family also has a colour variation: with dark brown and light brown fur spikes.
Some interesting variations can be found in the poses or moulds of different animals. The sturdy body type can be classified as variation as well, but there is more information about that in the Identification section. An interesting type of variation is that there are many animals with mix-and-match bodies - partially sturdy body and partially basic body type for example.
Other body type variations include the long-legged mould on the rabbits and mice. This long-legged mould on the rabbits sometimes came with a moulded-on tail and on mice it usually included the soft, rubbery tail. (Instead of the normal hard plastic tail.) Hands in this body type are flat hands, but not flat and big like with the sturdy body type - instead the hands are small. When it comes to rabbits, the head mould was also different in this body type. There are also rabbit children with moulded tails to go with the set.
Mice also have different types of tails. All these types are found on both adults and children. The basic types are flocked, hard-plastic tail and a soft rubbery tail. The hard-plastic tails can easily lose their flocking though, and underneath they can be dark grey or light grey of colour. It might be possible that some mice came with an un-flocked tail.
A little variation is that both cats and mice have been produced with and without whiskers.
The duck and chicken family also had variations in the body types. The parents came both in a small, winged bird body type and the basic FF body type with arms. The curious thing is that the rooster only had the specific rooster-head on the basic body type.