I tryed 1.6.1 and i maked a horse tame.
then i lead the horse into a boxer and the horse bugged into the wall and died...
The horse just walked into the wall and died after 5 seconds.
Steps to Reproduce:
1. lead the horse into a boxer
2. it will walk into the wall
3. the horse will die
Duplicate of MC-13632, please use the search function to see if your bug has already been submitted. Currently over 58% of tickets are being closed as duplicate.