Thanks to
@Indoraptor27 for granting me the permission to add these suggestions to his thread.The pictures are hidden under spoiler tags,that way they won't take up much space on the screen,unless you open them of course.If the pictures from imgur appear blank on the forum,just click on them and you should be redirected to imgur,where you can see them.Rightful credit to the different sites providing those pictures.
I won't cover wolves in this list -even if they are one of the species I'm most specialized in,because a lot of people already gave some good suggestions regarding their colour variants.
African Buffalo
-different shades of black: lighter,darker,dark-grayish
-brown
(- horn variants would make individuals even more visually unique)
African Elephant
-different shades of gray: lighter,darker
(-tusk variants would make individuals even more visually unique)
African Wild Dog
-would be awesome if some kind of randomizer system could be implemented,which makes the patterns/markings truly unique (rather than a fixed number of e.g. 10 patterns,which can occur multiple times - but that's just me dreaming I don't know if such a randomizer would be possible.Would fit AWDs,Wolves,Reindeer etc.)
-bigger/smaller yellow patched,bigger/smaller white patched,bigger/smaller black patched individuals
American Bison
-different shades of brown: lighter,darker almost black looking
-isabelline (cream,blonde)
(- horn variants would make individuals even more visually unique)
Bactrian Camel
-different shades of brown: lighter,darker almost black,reddish-brown
-leucistic;piebald (partial leucism) ;isabelline (cream,blonde)
Bengal Tiger
-all mutations can occur in the wild,but they are extremely rare
-selective inbreeding is the cause for a higher ratio in captivity and the fact that we can see where our animals are coming from ingame (e.g. description private zoo/rescue) made me include these mutations
-different shades of orange: lighter,darker
-pseudo-melanistic,leucistic stripeless and "golden tabby"
Bongo
- different shades of red/brown: lighter,darker,brown almost black patches especially on older males
(- horn variants would make individuals even more visually unique)
Cheetah
- pseudo-melanistic or better known as "King Cheetah" with different intensity
Common Warthog
- different shades of gray,black,brown/reddish: lighter,darker,body fur and "mane fur" different colours
(-tusk variants would make individuals even more visually unique)
Gemsbok
-thicker,thinner black markings on the back/legs/stomach area
-isabelline "golden" gemsbok
(- horn variants would make individuals even more visually unique)
Greater Flamingo
-different shades of pink
-melanistic
Grizzly Bear
-different shades of brown,gray,black: lighter,darker,mixed,brown almost looking reddish
-the same fur colours can be applied to the
Himalayan Brown Bear except the really dark ones,because they tend to have lighter fur colour in general
Formosan Black Bear
- the "golden moon bear"
Indian Elephant
-different shades of gray,black: lighter,darker,different de-pigmentation(can be caused by musth,but doesn't need to in reallife)
(-tusk variants would make individuals even more visually unique)
Indian Peafowl
-melanistic,isabelline(cream,peach,bronze etc.),piebald,chimerism
Indian Rhinoceros
-different shades of gray: lighter,darker (the picture below sums it up pretty well)
(- horn variants would make individuals even more visually unique)
Zebra
-leucistic "golden" zebra is already ingame,but there are still other leucistic types like brown or almost orange striping (newborn foals often tend to have brown stripes,which later turn into black,but there are cases in which they don't)
-more than 50% of the Plain's Zebra population still carries the so called Quagga-Gene (you can see a foal with that mutation below)
-pseudo-melanism;the "chocolate zebra" is part of this category
Reticulated Giraffe
-different shades of orange: lighter,darker
-pseudo/-melanistic
Spotted Hyena
-different shades of brown and orange: lighter,darker
-leucistic (if not already ingame)
Lion
-different coat colour and mane colour shades: lighter,darker,black for manes(especially very healthy males,with a high testosterone level) - no black fur
-mane variations
Reindeer
-different shades of brown,black,white,yellow,gray: lighter,darker full body,mixed + different markings (full body white already ingame)
-melanistic,piebald,isabelline (cream,blonde)
(- antler variants would make individuals even more visually unique)
Springbok
-different shades of brown,black,yellow,white
-pseudo/-melanistic,isabelline (cream,blonde),piebald
(- horn variants would make individuals even more visually unique)