Lure a wild one to an enemy's base then get it to trust you, if they have small tames or tames that have a low max health in general then that's an easy clap because since youre riding a wild carcharo you can instantly heal to max health when you kill a creature and harvest its corpse.

However the trust timer only lasts 10 min and the carcharo will automatically dismount you upon reaching 100 stacks of bloodrage then start attacking anything shortly after it dismounts you.