‣Mob Treat is a treat which will help you to tame more mobs including hostile and non-hostile ones. It will be really helpful in your survival. After taming a particular mob , it won't hurt you. It will be your friend and protect you from hostile mobs or the mobs which will hurt you 

‣After taming mobs like - zoglins , hoglins etc. will make them follow you. They may follow you or teleport themselves to you. They will try to stay with you, it doesn't matter at what place or in which biome you are. They will follow you consecutively.

‣I suggest you to use this in survival mode. You can tame hostile mobs like zombie, husk or spider to protect yourself. After taming mobs they will become friendly and love you. Also, they will kill the hostile mobs which will attack After taming a particular mob will make that mob friendly. That mob will defend you and kill the mobs which will hurt you. You can see in the picture below that the tamed spider is trying to protect me from the husk which is trying to attack me.

 ‣ Note - I don't know why but there is a problem occurring with ravager , piglin and piglin brute. Whenever you will try to spawn them your game will crash. They may or may not spawn in your world. So, don't try to spawn them.