Is there an official list of Fabuland animal characters? I found in an old box these animal characters. 

They are all LEGO original (the logo is present on all their parts). 

They are 25, maybe 30, years old. I think is the Fabuland series. I wonder if there is any way to discover how many they were and if there is any way to complete the collection.
Brickset has a list of 89 Fabuland figures.
Bricklink has a list of 93 Fabuland figures, these include
variations in accessories.
Fabuland.net states there are 142 characters in 80 variations and has
a full list of characters including which sets they were sold
with.


If you were to collect one of every animal type (excluding colour variations) you would at the very least need 20 Fabuland Figures:


Bear/Panda/Racoon
Bird
Bunny
Cat
Cow
Crocodile
Bulldog
Dog
Poodle
Elephant
Fox
Goat
Hippo
Horse
Lamb
Lion
Mouse
Monkey
Pig
Walrus


There are variations between figures in the copyright markings on the back of the legs, face printing between similar figures. In addition to the standard figures there are 72 variations of Fabuland Keychains.