Zoglins are harmed by the Instant Damage effect and healed by the Instant Health effect

Summary
Zoglins are harmed by the Instant Damage effect and healed by the Instant Health effect, despite being undead mobs.

How to reproduce:

1. Spawn a zoglin
2. Throw a splash potion/lingering potion of harming at it.

-> It takes damage

or

1. Spawn a zoglin
2. Throw a splash potion/lingering potion of healing at it

-> It doesn't take damage