DragonBond is a simple addon to Book of Dragons that I use for my server, and now extend for the rest of the playerbase to use as well. It adds plenty of functionality such as:
FRIENDLY FIRE PROTECTION: By default, Dragonbond makes your tamed dragons unable to hurt you and one another (with exception for some ability based AOEs like nightmare fire or skrill C ability lightning, which has a substantial cooldown anyway).
ALLIANCES: Use /dragonbond ally request to form an alliance with a player. If they accept, they will be flagged as an ally. Your dragons will develop liking and familiarity with them faster and not be able to harm them or their own dragons.
DRAGONRIDER LEVELS: As you tame and level your own dragons, you will increase your overall and species specific dragon tamer levels. Species specific levels have a higher effect specific to that species. A higher level makes it easier to tame dragons-- they warm to you faster, see you as less of a threat, forgive your transgressions faster, and take a greater liking to you. You will also develop Dragonbond bonding exp with your dragons faster.
EXP can be gained by increasing your dragon's DB bond level, taming dragons, and releasing dragons of high bond.
DRAGON LEVELS: Your own dragons have a level system, too, which increases by riding them, feeding them, spending time with them, and dealing damage with them. Your dragon levelling will increase its base stats, reduce rates of disobedience, reduce ability and breeding cooldowns, and allow them to socialize with your own dragons and allies faster.
DRAGON BREEDING: A simplistic, mendellian inheritance style of breeding has been implemented. A dragon must be above DB level 5 to breed with breeding enabled in its DB (read below) journal entry page. It will lay an ugly placeholder egg which will hatch in a few minutes if requirements are met, which will hatch into a baby. Stats and personality are also inherited with capacity for mutation. Feed them their favourite food while on wander mode to breed.
Two creative mode items have been added. Firstly, a genotype lens which lets you see your entire dragon's genome in detail. Secondarily, an MHST esque gene splicer. It allows you to pick and remove a gene from one dragon (which will kill them! Pick carefully) and splice it into a recipient dragon in an applicable gene slot.
DRAGONBOND JOURNAL: Press J (can be rebound) to open up your dragonbond journal. The UI is very very shoddy, I know, but this is mostly a quick little side addon anyway. Here you can see your rider level and dragon levels. For convenience, you can also whistle-summon them from the journal even if you lack an actual whistle.
Lastly, you can use the journal to set Ark style aggression states-- passive, defensive, standard, and aggressive. You can also order your dragons to hunt down your target, which they will pursue until it dies (or you call them back).
RELATIONSHIP REWORK: Dragon-Dragon and Dragon-Player socialization and relationships have been patched with some temporary fixes. Dragons have a complex relationship tab that allows you to quickly scroll through and search for all relationships. A relationship slot may be locked to prevent it from decaying or being overwritten. Relationship capacity for dragons may be configured serverside and increased/decreased.
GENDER DIMORPHISM: Models are yet to be implemented, but dragon species may experience behavioural and size differences based on their gender. For instance, male monstrous nightmares are slightly larger and highly territorial toward one another, but particularly accepting toward their female counterparts. Female skrills are more aggressive and violent than their male peers.
This addon is mostly just an accumulation of little fixes and tweaks that made things more enjoyable for my server to play with rather than a large scale project, so it will be rough around the edges. Let me know about bugs and I'll try my best to update it. The code is split between my own writing and AI assistance, but borrows from Fauna's own, meaning that I ask that it is only utilized for other Fauna dependent projects and that you credit me if you use it (hence the ARR)-- but otherwise, feel free to decompile, edit, tweak, and use as much as you want for your own Fauna based projects, provided that BoD and Dragonbond remain dependencies, proper attribution, and the project is made in good faith.
All feature requests are very welcomed here, too, and I'll see what I can do to add what people suggest so long as it does not require art assets. I make all of my art carefully by hand and do not use AI in that process, and thus my time in that regard will remain directed to Book of Dragons itself.

