Just thought maybe when you feed a dog or horse a particular food that you could give it commands like
Search for villages or temples
Go to waypoint
Take this item or items home for me and return
Don't attack enemies
Sniff for spawners
Protect while sleeping
Keep other players from opening selected chest
Maybe certain commands for certain animals highlighting the teamwork humans have with animals.
Just thought it might help the game with infinite world size and and reluctance to stray too far while exploring.