Please, if anyone knows I'll be so grateful for any help!
There is two manga/manhwa I'm looking for, I can't remember their title. The first one's premise goes like this: A bunny/rabbit boy gets "sacrificed" to the wolf clan as a bride and everyday they slowly do stuff together (mainly the wolf guy) to let the rabbit boy adjust before doing the real thing? It was a whole tradition thing. It's yaoi in black and white manga style, and I think it's completed(?)
The other one is: There's a girl from a clan that is known for their healing. They all have silver hair but she has a dark one, she always gets discriminated. Her mom died and she then becomes the king's bride. This one is fully colored manhwa style. That is all I can remember :(
https://www.mangago.zone/read-manga/ookami_he_no_yomeiri/
That's the manga
I found this in the comments as well, but it might be lost so here you go. (Other works with a similar "animal characteristics" plot)
mangago.zone /home /mangalist /346189 /
mangago.zone /home /mangalist /2004189 /