As my previous idea, i mention about the Horses, we can ride them, feed, take care, equipment, But in Wild Terra now dont have horses, i hope we are not pay for that ^^.
But think about Pet, they can do protect you to die also you can ride them. This is my short detail about pet.
Pet: Bear, Wolf, Deer, Hare, Boar....
Health: like human, can be damage
Food: Hare cant eat bacon or Bear cant eat grass ....
Armor.: just iron to steel
How we have pet ( i hope we not pay): Just domestication !
and how domestication ? i dont know, u can comment below.
Pet vs enemy: Attack when u want (only animal like bear, wolf, monkey ^^)
Pet vs friend in Dominium: don't attack ...