What I expected to happen was...:
The Snow Golems I spawned to walk around and defend my Village just as the Iron Golems do, and not attack Creepers or cause them to blow up.

What actually happened was...:
I would hear explosions off in the distance, go to investigate, and find that the Snow Golems were causing Creepers to blow up.

Steps to Reproduce:
1. Spawn a Snow Golem
2. Spawn a Creeper
3. The Snow Golem should target onto the Creeper and start attacking it, in which the Creeper will retaliate by blowing up.