I don't know if this was already mentioned and people are going to kick me for this but I think a cool idea for animal taming would be to increase it if other wild animals are close to them, making them wild themselves faster.
So tamed animal not very wild close to tamed animal very wild would increase the speed of degradation of the less wild animal.
And wild animal close to any tamed animal will increase the speed as well, faster than above.
Lastly this is an idea I have seen on reddit, is to give a trait to animals born from tamed animals, that would make them easier to tame or less wild themselves.
So tamed animal not very wild close to tamed animal very wild would increase the speed of degradation of the less wild animal.
And wild animal close to any tamed animal will increase the speed as well, faster than above.
Lastly this is an idea I have seen on reddit, is to give a trait to animals born from tamed animals, that would make them easier to tame or less wild themselves.