Hello, I hope you are doing well and are having a great day.

I wanted to bother you a tad with some questions, if you do not mind.
I placed this as a bug report since it's not really a suggestion either, as I feel like questions on curseforge tend to get lost a bit in the endless mass of harrassment you have to suffer from "update to version x.xx.x plz" requests.

So I'll name the questions below and perhaps keep this bug report open and pinned, in case someone in the distant future decides to as the same questions again, so you won't have to keep answering the same questions over and over again.
I understand that everything is currently still under development and none of these questions are meant to annoy you or pressure you in any way regarding an informative Wiki, since most of these questions just aren't stuff you'd usually ask given a guid book is provided. (Which the in-game book does cover most things.)

1. If parents of the same species, have different skins, will these skins be a dice roll on which skin the offspring are born with?
   Like if a black jaguar male mates with a yellow jaguar female, will the offspring be thrown a dice roll for the outcome of their fur color or will they always pick the skin of the mother? (This question arose because I'm testing this in my world currently and can't seem to get the Male's skin to transfer onto the offspring.)

2. Do Aardvarks, if you relocate them to let's say a man made artificial free roam environment (Zoo), make new burrows?
   a: If yes, what are the conditions to make them do so?
   b: Is it breeding related?
   c: Not a thing?

3. Since some animals have a size difference within their same species, is it completely random or does the world height they spawn in during breeding/natural spawn affect their size?
   a: Can a player manipulate the size outcome in some way?
   b: If neither of the above, will this be a future mechanic or not?

4. Will there be a way to set a home a home point for tamed animals?
   The wandering mechanic kind of mimics this, but one will have to fence them in nonetheless since they tend to wander away.
   I've touched on this a bit in my feature suggestion about territorial animals and think that having these two features implemented in a similar way would be beneficial.
   Since small animals have burrows, maybe something like a nest might help as a way to anchor them to a set position.

5. Will 1.16.5, no longer recieve support and bug fixes or even minor content updates?
   I understand completely that there is theoretically no reason for you to keep working on an old and outdated version of minecrat, especially with the pressing updates Mojang is pushing out.
   a: But from the perspective of someone that unfortunately can't afford a system that can run the more heavy and new versions of minecraft, will 1.16.5 be left behind?
   b: If that's the case, could we perhaps come to some sort of arrangement?
   Would you be willing to add a few features, fixes to 1.16.5 that you have planned for 1.18+, in exchange for a set amount of money?
   I wouldn't be able to afford to pay a whole lot, but something like 20 Euros I'd be able to, if that's enough.

Thank you for your time and I hope to hear from you regarding all this.

1. If parents of the same species, have different skins...

There is no inheritance when it comes to skins (or anything, really), everything is randomized at the time the mob is born. This is currently a technical limitation, since mobs do not know the data of their father. I'd like to give breeding some in-depth rework, because I am a sucker for Forestry bee genetics, but don't expect anything anytime soon.

2. new burrows?

There's no way for mobs to create new burrows, they are only placed at worldgen. Burrows are just a cheaty way to spawn mobs in the world without the massive baggage of ticking entities, and not meant to be an actual feature in gameplay.

3. Can a player manipulate the size outcome in some way?

Not currently, if I get around to reworking breeding, this will be included there.

4. Will there be a way to set a home point for tamed animals?

Still need to reply to your previous suggestion, since you bring some interesting points. No promises on the subject, however.

5. Will 1.16.5, no longer recieve support and bug fixes or even minor content updates?

Very unlikely. AFAIK, no critical bugs exist there, so that's probably done
At the end of the day, I do this for no other reason than having fun, and rewriting stuff I already have done is a slog.
Given the glacial pace at which I work on the mod, I'd rather put that limited time towards adding new features instead of redoing the same stuff again for an older version, sorry to hear about your situation, however, for what its worth, this mod will most likely still be there for you in the future.