I am not sure what of these events were the reason for the crash.
The dogs are attacking a skeleton which is shooting the dog or the player at the same moment.
When you look at them, it sometimes crashes. if you don't, theres no crash.
To provide even more informations:
i had a skeleton spawner, water flowing around that. So me, my dog and the skeleton were in the water.

But! It also happened in a cave.