As an Animal Handler DnD 5E Feat you master the techniques needed for being train and handle the animals. You also gain the below mentioned benefits.
- You can increase your wisdom score by 1, to a maximum of 20.
- You also gain the proficiency in an animal handling skill. Suppose, if you’re already proficient in the specific skill, then you do add double your proficiency bonus to checks you make with it.
- You can also use a bonus action on your particular turn for commanding one friendly beast within 60 feet of you that can hear is not currently following the command of someone else. You do decide now what type of action the best should be taken and where it should move during its next turn, or you do issue a general command which lasts for 1 minute, like to guard a particular area.
You may also want to read more about mage slayer 5e.